Open plan house - can't keep them out. They don't bother pins (I use flat dish) but I did catch the Siamese going chomp! on a cone of thread between the antenna and the thread guide. I cover machines now. She will also bat small pieces on the floor, and both she and the Snowshoe will sleep on any project. (They aren't allowed out, so they have run of house) The feral can't jump, but she finds imaginary stuff on the floor and I have to go find out what she is chasing.
I had one that used to sit or lay down behind sewing machine to look out window. I was always afraid I'd get her tail if I didn't move her.
The worst were the ferrets. They were caged, but if anything got close enough to the cage, they'd grab it. They'd pull as much in the cage as they could. They loved the empty spools. Freaked daughter out as she thought they had gotten a full spool of thread.