Yes, I can see you don't know what else but do you not have ANY idea of what fish you'd like. I mean, do you want aggressive fish, peaceful fish, a community set-up, cichlids, lots of colorful fish, active fish, large fish, small fish, unusual fish, a mixture of different large and small species, an oddball tank, a heavily planted tank,a river-type tank, a biotope tank etc... You need to give us SOMETHING to work with - there's just too many options.
If you want a completely random suggestion, I'd get some dwarf neon rainbowfish, some keyhole cichlids or kibs/pulcher or bolivian rams and a trio of moonlight gouramies.