Justin Mitchell has cataloged his dice collection and put photos of them online. Some of them are quite unusual, either made of uncommon materials or offering unconventional ranges. Pictured above is a 36-sided die.
Any of us (former) D&D geeks are familiar with many of these, though I note he's got non-standard 20 and 12 sided ones. These are shapes other than platonic solids. I have serious doubts as to whether a lot of the others would be fair, particularly the ones with shapes of different faces.