Core77

If you wanna talk Form Follows Function, it's difficult to find an object that stays truer to the principle than the venerable sawhorse. And despite its stark utility, the sawhorse still has room for an awful lot of variety. Check out toolcrib.com's excellent 24 Free Sawhorse Plans in the Hunt for the Ultimate Sawhorse, which breaks the plans down into eight categories:

1) Celebrity Saw Horses
2) Wackiest Sawhorse
3) Best Sawhorse Idea I Couldn't Find Plans For
4) Sometimes You Need a Mobile Carpenter Bench, Not a Sawhorse
5) Your Basic and Free Sawhorse Plans
6) Space Saving Sawhorses
7) Sawhorses for Sheet Goods
8) Sawhorses Etcetera

With designs ranging from "The Classic Sawhorse" to "The 14-Minute Sawhorse" to "The Cheapest, Easiest, Ugliest, Most Functional Saw Horse Known to Mankind," the list covers designs from the early 1900's to present day.