I've been told that cat's like to hear the sewing machine motor because it sounds like their mother's heart. Mine is the same way, she just loves to be with me when I quilt or sew.
My cat took pieces of the quilt I was making my niece and hid them. I found some under the stairs, but never found the other pieces. I ended up having to re cut them out. Now he brings me measuring tapes, fabric and other assorted items from my craft room. I'm really glad to hear there are other cats out there just as fixated
My cats like to play with my bobbins. I am forever finding them everywhere. I have a case with a lid to put the bobbins in but I guess it's too much trouble for me to actually close it. And yes, I think your cat may need a pattern. The only thing is, I would feel really bad if his project came out better than mine.