I'm attracted to functional souvenirs, the ones that don't necessarily scream WDW but are ones that you KNOW were purchased there? So please keep this in mind. From our most recent trip (6/29 - 7/02), we purchased the following:
1. A guitar strap from RockNRoller Coaster store. DS actually has been needing one. For the quality and the cool design, it was priced comparable to outside the park at $39.99.
2. A 2T coffee scoop. LOL! It's a metal scoop. We make coffee daily and use plastic scoops. In the back of my mind, I've been wanting a non-plastic one. The one from WDW has a Mickey hand on the end of the handle and other designs on it that are pure WDW. It makes me smile to use it every morning! It was $9.95.
http://www.amazon.com/Disney-Coffee-Scoop/dp/B003ZJ2358
3. R2D2 souvenir popcorn bucket. $10. It was just too fun.
From other trips...
I participate in the animation class at Disney Quest. I buy a print out of my drawing. I buy the package that comes also includes a pin. I think the package is $12.99?
Great Photopass photos. Price varies.
A skirt by Kariza designs from the Animal Kingdom. I debated it for a long time because I thought that I might be able to get one cheaper outside the parks. DH convinced me to just get it. When I looked online at home, I discovered that the park price was actually more expensive. I love this skirt! $34.
A knit sundress with a subtle Mickey head included in the pattern. $25.
From Epcot. Skill-sized soccer balls from around the world. Soccer jersey from the football/rugby store in UK. Soccer coaching book from the same store (we didn't buy it at first because I was convinced that I could buy it outside the parks, but I couldn't find it, so we bought it on our next trip.) Chopsticks from Japan. Marionette style puppet from China (DS was really into puppets for a while). Souvenir beer mugs from Germany and UK (Still use them!)
Whenever I can incorporate a slice of Disney into my everyday life...I guess this is something of the definition of a souvenir? Something that reminds you of the trip? LOL!