I give out the same thing very year, six fun size candy bars neatly placed in a sealed Ziploc snack size bag. They're the candy bars I prefer and liked to get when I was a kid. The treats with their popularity ranking IAW post #2 above:
1.
...Reese's Peanut Butter Cup
5.
...Snickers
12. 3 Musketeers
28. Hershey's Milk Chocolate
43. Mounds
......York Peppermint Patty (unranked)
Couple of years ago, a girl (about 9-10 y.o.) looked down into her sack at the treats I had dropped into it and said - "You put them in a bag."; then, kind of thinking out loud said - "That way everybody gets the same amount." then she exclaimed - "YOU'RE SO SMART!"
I got the impression she was perhaps feeling a bit shortchanged that Halloween.