Let's see, favorite toys around here . . .
The plastic pull-off ring that holds the lid to the milk jug (last time I was in Canada, milk came in plastic bags, but you might get them on some kind of juice bottle)
The plastic bag of plastic bags from the grocery store
Any dangling string, esp. the yarn I am knitting with. Oh, and Sparky carries the balls around the house and hides them.
Dripping tap water
Wiggling feet and typing hands
The other cat
The artificial Christmas tree - this is a chew toy, not a climbing toy
Small articles of clothing like socks or underwear - but not small stuffed animals
Q-tips / ear buds, straws, pencils, chopsticks - any kind of small straight item esp. with a bend in it