My newest rats use the space pod incorrectly. They lay on the arms of the space pod that connect to the top of the cage more often then they sleep inside of it. Do anyone else's rats misuse their space pods like this?
My boy likes the top of his igloo too. Neither of them try to sleep on top of the pod though. My big guy Duke ended up tearing apart this fleece cube I bought them, it had a little pillow sewn into the bottom and he tore that out. Now he crawls into the mangled cube and sleeps with a single layer of tattered fleece between him and the floor of their cage. He seems to enjoy it much more than the $15 cushy cube it was before. Lesson learned...xD
My recently passed girl Bijou would sometimes sleep in the food dish if I was using a shallow wide one. And one of my girls Aoife is always climbing upside down on the top of the cage! Not too many weird sleeping spots with my current ratties, but I'll often look in to see a couple snuggling and one will be laying completely on their back with feet up in the air.