Honestly, I'm not sure what these are supposed to be. The initial design was somewhat loosely inspired by the memory of an old plastic toy I used to have, but these don't really look like that now that I've put them together. I like them though. They've got a soft, childlike feel to them.
Others in this set:
D4
D4 (bottom edge)
D6
D8
D10 (ones)
D10 (tens)
D12
D12 (rhombic)
D20
D20 Spindown
Basic set