If you have an old suitcase not suitable for traveling you can easily turn it into the place where your cat can rest i.e Cat Nest as I call it.
This is kind of Do it Yourself project for your boring weekend if you have. You need an old suitcase, four wooden legs (plastics ones also do) and a mat size of suitcase.
Remove the lid from the suitcase
Install four legs under the suit case
Place the mat inside the suitcase
Invite the cat to sit there :)
PS you can use Old TV casing instead of suitcase