Lizard-King

Looking to find some tank mates for a Betta that are a little more unique. I have a very timid and shy female betta that I know (from keeping her with other fish) she doesn’t have a shred of aggression in her. She’s in a 29 gallon by herself, live planted aquarium with low lighting. Any suggestions? (I have watched many videos including Cory’s two different ones and I just want something different from the typical tetra, or pleco)