Pocket Mice- My cats would love these, especially stuffed with some catnip! Free pattern.
3 Mice Catnip Toys: Your cool cat will go crazy! $9.95
"Thank you for mice, fish, catnip, balls of yarn and warm sun rays to sleep in. Amen......and, oh, yes, boxes.''
Ethical Pet Felt Mice with Catnip Cat Toy (6 Pack) (Set of 3) $12.63
Plaid Mice with matching cords! I think maybe it's a concept design, but it's certainly an idea for a DIY.