What other animals could i keep with a Orange-Eyed Crocodile Skink (Tribolonotus gracilis)?

i ume you already have the tribs so as you know they are a shy flightly species and all i can see is stress and food competition issues if you mixed these with anything. and naturally there are all the other dangers of mixing like agressive behavior, disease/parasite transfer, different micro climates/neiches etc