Our cat loves one of his fleece toys, hates others. I have no idea what the difference is! He also has a couple of felted wool (old sweaters) ones that he likes a lot, they are the kicker style (about 6" long) with no catnip. In the past, he's had some regular cotton ones that were favorites until, yes, he chewed a hole in them - but it took a while.
Basically, I think any assortment in fabric scraps you have would work well for different cats and would be appreciated.