A cardboard box (carton), an old t-shirt, cello tape and a pair of scissors.
Get a cardboard box of any suitable dimensions.
Stick the flaps of the box firmly using a wide tape.
Now take an old t-shirt.
Start wrapping the box with the lower end of the t-shirt.
The front end will look something like this.
Tie a knot at the backside of the box.
Now the sides of the box which has the sleeves need to be treated.
Fold both ends of the sleeves inside.
Your little pet home is ready!