I just thought of a couple of other "souvenirs" (I'll use that term loosely!) that I have picked up to remind me of our Disney vacations. I don't tend to collect a lot of stuff, but I do love the emotions tied to more sensory items. As a few examples, I enjoy recreating some of our favourite Disney meals at home (see recipe suggestion above) and have made a few things such as the Triple Berry Fruit Cobbler that we had at Artist Point and the Cheddar Soup from Le Cellier. On our last trip, we stayed at the Wilderness Lodge and I absolutely loved the H2O+ shampoo, conditioner and lotion. When I got home, I went online to H2OPlus and ordered some for myself (you can find them listed under Body & Spa: Disney Resort Amenities). Every single time I use them, the scent just carries me back to our stay. The other thing that I find that I really relate to and find myself "collecting" is music...not necessarily the same songs from the movies that you hear often, but unique versions of the more common songs, songs that remind me of particular rides or experiences like parades, and even songs that are played in the background at resorts and "lands". As an example, you can search online for "Disney Wilderness Lodge Playlist" and find a list of their lobby music, but I'm sure you can find lists of songs for many of the areas in the park and I am pretty sure they sell CDs of music in a number of the stores.
Anyway, I know most people wouldn't probably consider these suggestions true souvenirs, but for some, they might provide alternatives to bringing home yet another trinket to dust.