My folks gave me a formed cat tunnel house (we call it a cat donut). Izzy liked it once I put a cushion in, but then stopped using it for some feline reason. When the kitten showed up, we moved it upstairs and my eldest had the fantastic idea of unzipping it to make smaller hiding spaces. Thor decided it was the best hiding space, and when we moved his food down to the floor, he also stopped pitifully crying when we left the room. Phew.

It also makes a great exercise surface since Thor has developed a love of the red light game (RLG for short, aka cat laser toy). As he becomes more comfortable in his new space, he is also settling into the center well of the cat house instead of hiding all the time.