Anyway my plan was to print put some new hooks using my 3D printer. I thought this would be the "cheap" way to go. I let my imagination get away with me and ended up with something a little more expensive but also something unique.
And a round hook or bubble:
The overall affect is a fish tank with a bunch of fish skeletons swimming around.
The design is a little odd bit visually appealing and has a ton of places for the kids to hand stuff.