Several furniture projects from Greydragon.com, all decorated with at least a heraldic shield and ranging between based on period practice to SCA compatible: Medieval Cooler Chests (a wooden cooler cover), Break down panel chests (simple chests with shields), and a Folding table.

Danr Bjornsson, OL, and Isabel Ulfsdottir, OL The top page for a couple of very talented individuals. Since this link list is most interested in projects including heraldry, I'll happily direct you to several specific projects: Miniature Heraldic Clothing Hooks, a nice, period little detail, and Heraldic Hlad, cuffs, and cloak, a nice project all about incorporating heraldry into the clothing of pre-heraldic cultures.

Making of the Northshield crowns A complex, beautiful project. (The wayback version and a picture gallery; not sure where the work in progress article went.)

Cover Pattern A card weaving pattern for making a compass rose cover (i.e., the Northshield badge). Easily lengthened to make trim, belts, et cetera.  (Link currently broken, use the Wayback Version.)

Laurel Leaf pattern A card weaving pattern for making a Laurel cover (i.e, badge of the Laurels). Like the Northshield badge, easily lengthened to make trim, belts, et cetera. 

Estrella Gloves Beautiful gloves, made in the style of the 16th century and decorated with the arms of the baronies of the Outlands. Interesting research on gloves as representations of land grants.

Kingdom Saris An interesting attempt to make a heraldic sari via wax-resist printing.

Mosaic Banners: No instructions, but pretty simple to figure out from the pictures. For those who want the look, it's very effective.

Mosaic Sundial: A real mosaic this time, a sundial featuring the "Lost Boys" heraldry.

Silk Painting a Heraldic Banner (PDF) Nice article, lovely work! 

Palmetto Plate with Heraldic Design Beautiful work, complex project, though. Try the earlier tile painting projects to get a feel for it. 

Several different sotilties: Dame Alys has a whole page of cakes here; Rowan Ashbrooke has a nice cake here (page back through gallery to see a couple of pitures of the cake before completion), and one of THL Merit Rose's cookies can be seen here.

Heraldic Embroidery: PDF file. Short article and research with suggestions for creating heraldic embroideries.

Two 13th C Pouches, One and Two: A combination appliqué and embroidery project that produces a nice little pouch or sweetbag. Look around the site; there are other well-done projects featuring heraldry.

An Embroidered Purse: Nice little bag based on a fairly famous example of a period brick stitch bag. The embroiderer modified the design to accommodate her arms, and it works very nicely. This sort of thing is what Creative Anachronism is supposed to be. :-)

A Belt Book Cover: Embroidered with a badge, on "livery color" wool.

Knit Scarves: Featuring the populace badge of Atlantia.

Bottlecap Pin Cushions: There's a photograph tutorial, link right under the picture. Make a small, embroidered pincushion with modern materials. The gallery section has a number of heraldicly embellished cushions.

Pysanky Showcase: Take a look at the egg decorated with a heraldic device.

Cross Stitch Patterns from Spain and France: Nice little article featuring a heraldic inner pillowcase, although it is not described as such. This is one of the blessings of heraldry: if you see a Castle of Castile pattern from a pillowcase in a royal Spanish tomb, you can be sure it's heraldic and not merely aesthetics.

Armorial Long Cushion: A lovely long cushion made via embroidery slips, atop an heraldic footstool. Nice work.

Gift Pillow made by Alayne: Beaded roll pillow, very pretty.

Display shield based on historical funerary shields: Describes the construction of a "shield in relief" for display. You wouldn't take this beauty on to the tourney field, it's art!

A Bibbard!: A baby accessory made SCA compatible. Also terrifically fun: This livejournal entry features an SCA birth announcement by way of a heraldic shield--the arms of the mother and father are quartered on to the same shield, and a label is placed over the whole, indicating an heir.

A Camp Chair Cover: A project for covering your director's chair with something less modern.

SCA Heraldic Postage: Design your own heraldic stamps or just buy these general SCA stamps. Consider them the modern substitute for the wax seal!

Sources for Art and Art Instruction, Suggestions, Articles on Period Practice 

Karen Larsdatter has a site devoted to collecting reference information related to material goods from the SCA's era of study. Perusing the site will lead to many, many examples of material goods that have some heraldic element as decoration. This is a place that is worth spending a lot of time. Along the same lines, this short blog entry includes a list of material goods that have heraldic decoration. This photo gallery has pictures of period items.

Kingdoms of the Knowne World - flashcards Also useful as patterns for painting, embroidery, et cetera.

Heraldic Clip Art Excellent source of copyright-free line drawings that you can use in creating your projects. 

Heraldic Templates From the West Kingdom, a site still in its infancy. If the template is there, you will see a .jpg image of it displayed on the page. Use for drawings, stencils, et cetera.

Pennsic Traceable Art: Common charges scaled to various sizes for tracing to your projects. Very nice. Hand drawn art rather than clip art.

Heraldic A decorating site from the UK, this particular link takes you straight to a section on heraldry and functions, in part, as heraldic clip art/visual reference. Other sections include period interior decorating, faux and other painting techniques, and a variety of other interesting things. Mix and match to make your own projects! 

Uses Baron Modar's compilation of suggested items for heraldic embellishment. Similarly, there is a document from Atenveldt that elaborates on the theme.

Heraldic Display Discussion with illustrations regarding heraldic display, including as done in period. However, the SCA Kingdom of Meridies has some fairly stringent rules on heraldic display, and advice on display in the SCA given in this article should be checked against your Kingdom's practices. Kind of like this whole site condensed into a 3-page article.

Cassandra di Milano's Elevation: A survey of the activity that has a goodly heraldic display, caught as incidental to the other activities. Note particularly Casandra's sleeveless surcoat, and a particularly fine subtlety. Also hats, surcoats, banners, a book box, a scroll.

Beyond Belts Not so much a how-to project, but instead a short article on period ways of showing vassalage. The red/green/yellow belt scheme is SCA custom. Nothing of the sort appeared in period.

Tokens in Period Like the link above, another discussion article. This one features a look at period tokens and favors, much better than the ubiquitous embroidered/painted flap hanging from someone's belt. Put your heraldry on something appropriate when you give that token away!  

How to Make Your Encampment More Period: A discussion regarding ways of making the mundane less glaring, including suggestions for incorporating heraldry into your encampment. It's worthy advice, as the Peancalvus encampment always look very good.

Heraldry in the Home: Commercial site with suggestions for decorating with heraldry. Nothing really new here, not any actual projects, but different interpretations of familiar themes.

I am always looking for how-to articles featuring heraldry as part of the design. At some point in future, I will also include here other online how-to projects that do not include heraldry, but which can be easily modified to do so. Any suggestions for articles may be sent to me at merouda at hotmail dot com.