Maybe these will spark some creative ideas for you –
*I once did a bag of stuff that all had ‘light’ on the label or in the name.
*Stuff that had all become recently kosher (oreos, m&m, gatorade)
*Different things that were all corn in the name (popcorn, cornbread muffin, candy corn)
*My favorite was when I had a machine that you used to put gifts in balloons and I gave out a balloon with a plate of nosh in it.
*I think a friend once gave us a makeshift airplane meal.
Why don’t you do black and white things, like a keyboard?