How do I put legs on a curved surface?
Get some thick stock, maybe a few heavy branches from the tree, and drill a 1.5&quot; hole saw into the end of each leg about two inches deep. then with a regular saw, cut around the outside two inches from the end until the outer part falls out and you're left with a 1.5&quot; round stud out the end of the leg. Then drill a 1.5&quot; hole in the seat and insert the leg into the hole. You'll have to file the peg a bit to get it into the hole.
I'm assuming you don't have access to a wood turning lathe.