hmm. a pair of dwarf gourami, a group of 6 pygmy corys would be really nice, maybe something else *ponders* (effectively about 12" of fish, inch per gallon n'all that)
a group of tetras, 6-7 depending on the species, theres more than just neons out there! i like bleeding heart tetras, they need quite soft water though, what PH is your water?