sardines

kittens like sardines

http://en.wikipedia.org/wiki/Sardines

jerboas

i'm guessing that kittens would like chasing jerboas

http://en.wikipedia.org/wiki/Jerboa

Whiskers

http://en.wikipedia.org/wiki/Whisker

Kittens like whiskers - they stop them from bumping into things

Mice

Kittens like mice

http://en.wikipedia.org/wiki/Mice

Cat in the hat

Kittens might like the Cat in the Hat - but possibly only if they are keen on getting a hat when they're older

http://en.wikipedia.org/wiki/The_Cat_in_the_Hat

Catnip

Kittens like catnip

http://en.wikipedia.org/wiki/Catnip

Cushions

http://en.wikipedia.org/wiki/Cushion

Kittens like cushions