These are pretty nifty. They're called Freaky Geeks and you can get this full set for a 3 or 4 bucks right now on Ebay. They're about 1 inch tall so they meet my fit-unnoticeably-into-a-drawer requirement.
This is just the kind of thing to get me into a drawing mood. They all have names but I don't know them. I could google them to find out their names, but the google tab is ALLLLLLL the way over there on the other side of the screen, so forget that!
You can probably attain an entire set the old fashioned way, from a real gumball machine, but I bet you'd spend tens of dollars before getting the last one needed to complete a set.