With the Snicker group for the most part although in hot weather M&M's w/Peanuts won't melt. In a search of the net for trail mix recipes I found and modified for taste:
1/2 c peanut butter(extra crunchy-more peanuts)
1/2 c honey
Mix together and add
1 c quick cook oats
1 c flaked coconut
(raisins etc optional)

m&m's won't stick, 1/2 to 1 cup of chocolate chips was used. Shape into balls and let air dry for awhile before storing.

The original recipe added 1 c powdered milk and was rolled in wheat germ if I remember right. Other attempts with recipes from the net didn't work so I jotted this down w/o optimism and forgot to get the cooks name. Coconut has antibacterial qualities and bacteria can't live in honey so maybe they don't spoil so easy and it tastes better than some trail food.
with Thanks and Apologies to the original author should he/she ever read this!