A lot like these guys, no? Wifey brought me a bunch of these a while back. I think they're supposed to be fungus/spores/etc., and they're nice and rubbery.
Also, I've got a yellow guy, larger than the others, and he looks a lot like Herpes from the Kneehigh Park sketch....
"HEY, gang, don't hurt me! It's little ole me Herpes! Cooler than your best friend, I'll stay with you 'til the END! You won't see me every day, but every few years I'll come say 'HEY!' No cure for me in sight, I won't go without a fight, I'm the Herpes! The Herpes! See you in hell, mothereffers!"
Welcomed currency: Rubber Uglies, rubber monsters, jigglers, vinyl monsters, Arco monsters, Imperial monsters, fish cans....