Essential Free- and Shareware for Kids

Yesterday I brought home a free, old, but working laptop from work to give to my 7-year-old daughter to use. Right away I started installing her favorite programs she's been using on my laptops and she's so excited to have her own system to use them on. Putting together this little package for her all at once got me to thinking that there's some really amazing free and cheap software out there that gets kids' creative juices flowing and lets them experience the unique power of computers at their level. Here's a list of what I put on for her:

• Pivot Stickfigure Animator; freeware
  
• ArtRage 2; freeware light version with a full version for about $20
  
• Samorost 2; used to be shareware for $10, now a cd that includes game and music for $15, really great music. Play Samorost 1 online here
  
• Owen Piettes' Falling Sand Game; freeware

I know there's a ton more stuff out there, but this is where I've started.