Grow your own. Furniture that is. Christopher Cattle has pictures and basic instructions on growing a three legged stool. Similiar previously here, here, and here.
NewCROP index part of the Center for New Crops & Plant Products, at Purdue University is an amazing collection of commercial plant information. From Macadamia nuts and qinghao to Tumbleweed and Sweetgrass a broad range of plants are detailed. The information that is included for each ranges from a single paragraph for Quackgrass to dozens of internal and external links for Soybeans. Crops are listed both alphabetically by genus and common name. Warning: Web .95 navigation