I'm not really sure where this belongs, I suppose it could be off topic, but it kind of is puzzle like and really since I want to buy some, it could be in marketplace. So mods, feel free to move the topic if you'd like.
So I'm sure some of you are familiar with solids with a constant width. For most people, the sphere would come to mind and probably wouldn't realize that their are others. So I guess the puzzle is to think of others. Bonus points for not searching the internet
Anyway, would like to purchase a set of three that all have the same width, but are different shapes. The only place I've seen that comes close is a website called grand-illusions.com. The set they sell is all one shape though. So I would imagine some of you CAD/Shapeways people could probably design some.
Okay, nevermind, I just did a search on Shapeways and it appears someone has already done this. But if you'd like to create some different ones, I think that would be kind of neat as well.