What reptiles are compatable with Bearded Dragons?

i have an older bearded dragon who doesnt move too well and has been very lonley lately. we had a young iguana with him and they got along great for a while but the iguana ped away from sickness and our beardie has been sad ever since. what lizards, besides iguanas could i put in wiht him? i do not want to invest in another green iguana because they arent what i can support right now, so that is not an option. what should i get to keep old Gatsby company besides another beardie?