If you've never owned shrimp before I wouldn't start with crystals, especially since they can be expensive, the higher quality ones being 10$. If you want fish dwarf corys or otocinclus would be pretty cool in a heavily planted tank. A mystery or assassin snail are also cool. I know some people are probably going to kill me for saying this, but I think neons are fine in a 10g...or you could go with ember tetras, and a betta.