Our family typically goes to a Dollar Store to find misc Stuffers each year.
Some ideas might be:
Lottery
Lint Roller (the one w masking tape)
Extra phone charger cable
Car freshener
Car tire cleaner
Gummy Bears, sunflower seeds, pumpkin seeds, Beef Jerky, Choc covered almonds, etc......(go to a Whole Foods type place where you fill your own bag w/ granola, choc, nuts, etc)
(as a joke, one year my daughters bought a $1 drug test or a hemroid cream in the dollar store for their uncle)
Another good place to get stuffers is TJ Maxx or Ross or a store like that. They have all kinds of different international / gourmet snacks. Personally, I like the Stroop Waffles, or the Virginia Gourmet Peanuts, or Choc covered espresso beans