This is a small stool we found in Germany during the semi-annual large trash recycling days. It is a tree trunk cut horizontaly, and three spindle legs attached. It is very sturdy, and very heavy, but not very comfortable.
I used denim scraps, and pieced some longer strips for the sides. Then just added a casing which my 12 year daughter #3 sewed while I supervised, and ran an elastic thread through the bottom. Much nicer for my tushy now. LOL.