Build your own
This is beautiful carved wood. But I think it might work with leaves mod-podged to a balloon, balloon then popped and removed. I think it would be gorgeous as centerpieces--if it worked.
embroidered bowl machine embroidering on soluble fabric and shaping them wet into bowls. Each vessel is one of a kind, and they are all so stunningly beautiful.
Hexagon bowl tutorial- easy project, great for fabric and interfacing scraps.
Here is a wool snippet bowl that is so easy to make. It takes just about 30 minutes to finish and can be made from your favorite wool fab.