I've been looking at the Keil Stool designed by Daniel Heer for awhile now. The stool is constructed of European Oak or Black Walnut and leather which is tanned in pits using a method that dates back to the 17th century. No glue or nails were used in it's assembly. A very functional yet elegant piece....available at Matter. The price is beyond my budget ($2,500... yikes) but window shopping is free.