I have a reptile room, and the room has tanks all around the outer walls but the rest of the room and center is set up for my lizards to come out and run each day . Rocks, plants....
I have one BIG male collared almost 16 inchs named Kong, who I allowed to free roam with a female. They dont get put back in a tank, they live out. They are very tame.
I have set up a corner basking area, for them, and they have some big rocks around the room that they sleep under at bedtime. Lately my desert iggy has decided he wants to sleep out with them, so sometimes I allow him to.
But everybody else just gets time out when I'm there, and returned to their tanks. I like to handle them all, that way ya have nice lizards. 
Heres the male, and female collared, and the desert iggy, floor basking area.
Kong, Kachina and Hershey

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Eve / PHEve