Didn't think of the idea on my own but decided to make these for those days I can drive up to the site and just sleep in the truck instead of putting up a tent.
Finished the back window today and need to buy a few more magnets for the side windows.
Went to lows and bought some fiberglass window screen, some magnets and Gorilla tape. If somebody had some sewing skills they could stitch magnets in but the tape works fine.