I had some green and blue yarn left over from the little hat, but that wouldn't be enough on its own. I popped into a charity shop and checked their bin of yarn, which turned out to be mostly baby wool (I say
wool- it was mainly acrylic). I bought a load of blue and white and thought that would probably do... and it nearly did. I also dug out some bright pink halfway through.
I think it takes a bit of imagination to see this as rows of cats, but it's still a pretty blanket and it was a nice project to do - not too big. I need things I can finish, and if they're cute and snuggly at the end of it, so much the better!