It's was a close choice between:
Licorice, because who the hell thinks some kid actually wants licorice as a present. Major bonus points if it's black licorice.
Candy corn, that crap just tastes like...well crap. Bonus points if they gave you pieces of it lose instead of in a package.
Fruit like apples, not that I disliked fruit, but it was relatively heavy and was probably going to spoil before I got around to eat it, and it took the place of something that could have been candy on Halloween.
Smarties, they're like Sweet Tarts except instead of being actually good like getting Sweet Tarts would have been it's like getting a way more bland and tasteless imitation.
I think I was once given one of those Peeps marshmallow candy birds.
I actually appreciated the dentist that gave out small tubes of toothpaste instead of candy on Halloween more than the above stuff.