Wow! How to narrow it down to one?
I am a WDW shopaholic (thought I was making up words, but I looked it up and it does exist, LOL)! I love to buy things at WDW so that I have reminders around me ALL day. I am more of the "buy things I use anyway, just with a Disney theme". Things I have bought:
Frames are great. For all those pics you will take of the kids.
I have a few blankets. A really nice throw and some fleece ones to snuggle up with while I am watching Disney videos
We bought lots of stuff at the AKL. I redecorated my bedroom in a safari/African theme so this stuff really came in handy!
Suitcases! I bought some great ones in DLP. But got a few good ones in WDW too.
CDS. Always nice to listen to WDW music, and I really don't listen to much else. Drives my family nuts
Jewelry. I have several watches. Earrings. And I bought 2 great silver bangle bracelets last year. They have a little Mickey head that is so subtle, you have to really be close to see it. But I know it's there and that's what counts.
Coffee mugs/glasses. Especially the ones you can get engraved with your name.
Bought a nice kimono from the Japanese pavillion and a terry bathrobe from the GF. Sure makes getting a shower worth it!
Have a great trip!