Generally, they both adore anything with feathers - if they were outdoor cats, there isn't a bird that would be safe for miles! One toy we bought them is a squeaky mouse lure toy....we HATE it. A year on and the damn thing still squeaks - its the most annoying toy in the world, so of course they adore the
thing!
Our two do like the lure toys we get them, but by far their favourite is an old bootlace with a charity wristband tied on the end and dragged along the floor
I have heaps of these bands because I used to work for a mental health charity and we ordered loads, so there were plenty left when the "craze" died down.
Shoeboxes, paper balls, elastic bands, pingpong balls (especially at 5am), pens, the TV guide (gets shredded), the post (see TV guide..), my feet (when in bed, or the bath), my moblie phone charm, the washing on the clothes-horses, my laptop.....anything they shouldn't - these are all big favourites!