I have a 10 gallon aswell, it has been used for raising fry out my ponds, but recently I'm putting some more interesting fish aswell, which will include the white cloud mountain minnows and hillstream loaches.
There's a few more that I might of been able to have but by putting small fry in there I can't have fish that would use them as snack!! As you don't have this problem you have a slighly better choice.... try looking at the Pinned topic- Bored with goldfish!!