I am also planning to implement this! One idea I have seen is to have a bubble wand with a note that says, "Thanks for popping by!" I am going to do this idea for the younger kids. Then I figured we would include a mug for the adults, and some brochures with info about the youth program. We do have some allergies in a few kids, so I will probably always stick with non food or candy that has none of the top allergens.