Love the binary clock ideal, I'm going to get that one! DD's 5 & 6 are into experiments big time, so sceince & chemisty sets. They have been begging for American Girl dolls for a couple of years so I broke down and got those, with DD6 it had to be one that was retired and a collectable (had to resort to e-bay for that one) DD5 has always been into puzzles but this year she really wants a K'NEX Loopin' Lightning Coaster, haven't read up on that one yet, but it looks like fun. smile