The base is a chips & dip party plate that I bought at Target yesterday for $2.50. The green thing is an "ice bucket" (we were using it as a trash can!) bought at the dollar store..
I just (gently) drilled a hole through the center of both of them, fed a cord through, and tied a knot at the top and bottom for a secure fit. To make it a little more secure, I drilled some tiny little holes and fed a clear zip-tie through 2 of the "petals" of the dish, and put a little bead of hot glue on the others.
Then I drilled out a hole on the top of the green part so feed could be added in at the top and voila! It beats buying one at the store for $10 and it's way cuter!!! Just thought I'd share!!