From the weaver's booth at the Oak Park Fair Kent bought a blue blanket, a deep blue green fat stripe alternates with a slimmer sky blue. It doesn't have a tight weave. This is problematic as the cats seem to enjoy sitting on it.
You know how if a cat is feeling particular enjoyment he opens his paws, his claws splay out, then he tightens his paws and his claws curl under. In the tightened position he lifts his paw then lowers it spread.
The spreading paw extends the hooks which neatly capture one of the fat threads of the blanket, when the paw lifts the thread pulls up. Though we try to keep the cat boys happy elsewhere they do once in awhile get pleased with things while on the blanket.