This is a fun simple project to make with material you probably can find around the house. Cats like almost anything they can crawl in and this is no different. Basically some card board metal hangers tape and safety pin and you can make your cat it's own tent.
Step 1: Tools and Supplies
pliers - to bend hangers
sissors / razor blade to cut card board
Step 2: Making Frame
Start by cutting your card board. The size that I cut it to was 15 x 15 inches. This works good for both the hangers and the t shirt. Then bend and cut your hangers. I used a pliers to bend the end of the hanger to break off the curved end. Then use the pliers to bend the hangers into U shapes that will make the dome of the tent. Once you have these cut and bent you need to attach them to the card board. Do this by poking holes in the corners of the card to stick the hangers threw. Once threw bend them so meet in the middle then then tape them together. Also you can tape the hangers in the corners were they connect to the card board. Here you could add carpet or other fabric for the cats to lay on.
Step 3: Adding the T Shirt
I used a size medium shirt for tent. I choose a shirt that had a tight neck hole that wasn't streched out. I pulled it over the hangers so that the neck hole was facing the front and the sleeves were on the sides of the tent. Pull the shirt tight and snug then safety pin it down. Pull the arm sleeves tight and safety pin them down.
Step 4: Test Out
As you can see the cats love there tent. You could add a toy hanging from the top, or make it bigger for multiple cat to use at the same time. This is portable and easy to make with supplies probably laying around the house.