I usually limit our offerings to "chocolate or chips." But the chips on offer here are a little odd tasting so I've substituted hard candies (Jolly Ranchers or Campino!) for chips. I haven't included any type of nut treats for a long time.
We don't have food allergies but I know lots of people who do. So I think I can get behind the Teal Pumpkin Project--which is basically about offering non-food items at your door on Halloween night.
And while I can't bring myself to actually put a teal pumpkin outside my place (teal...ugh, so NOT Halloween) I will have some hand made Halloween decorations on offer as an alternative to those who can't have chocolate or chips.
CBC News - Teal Pumpkin Project making Halloween less scary for kids with food allergies