[tool]Pliers to take the hangers apart[/tool]
[tool]Tape to attach hangers at the top[/tool]
[tool]Metal wire to put all the construction together (be sure to
secure the sharp ends of hangers with the tape[/tool]
[supply]2 Coat hangers[/supply]
[supply]Cardboard to put underneath the pillow[/supply]
Put all supplies and tools on the floor and prepare the space for your work.
Take the hangers apart with pliers and shape them as shown on the picture, using a tape on the top (wide enough to put the pillow and the cardboard inside)
Strech your t-shirt on the construction leaving sleeves loose for additional entrances or tie them at the back of a tent. Here it is. The easiest house for cats ever!