So, what are you good folks using for your kids?

We have the usual stuff (Office, IE) but now that we've shifted from a desktop environment to strictly Thin Clients, I'm at a bit of a loss for other software. Some of the stuff we had doesn't play well with RDS so I'm on the lookout for new things

Specifically: Skills for little kids (they can't read or write and used to use Gcompris to learn how to use a PC)

Freeware is preferable but it's not a trainsmash.