We like the Christmas ornaments. There are many choices, and even though they are not inexpensive, you can buy several for not that much money. We also like snow globes. Even though these may be seasonal, we don't mind having them out all year.
Another favorite is a nice Mickey trivet for the kitchen table, and we see it every morning. Downtown Disney has so many shops; you're bound to find something you like if you don't mind shopping just a little bit while on vacation.