MILLIPEDES! At long last, I have the RIGHT species! I've recently received three of these brilliant black beauties - hundreds of garnet red legs and a darkly gleaming shell that looks like pvc coated conduit cables.
Apparently I've received two males and a female - the younger male is timid (curled up in the pic), the bigger male is bold and brash, and the female has dark brown bands in her wide carapace. When I say wide, I mean wide - she's thicker than my thumb.
Jam is terrified of the millipedes. I lifted her up so she could see them through the glass, and she went "ZOMG T'S A SNAKE!!!"