I always commute with a bag of those little Hershey miniature chocolates (assorted) to dole out to gate agents and FAs. A $5 bag of treats pays heavy dividends- like being waved up to board first instead of after the platinum, gold, silver, tin, lead, copper, followed by groups 2 through 9. Lately, Blue Chips (B6) have been quite popular (and often leads to a first class meal). Embarrassing operational note - I once brought a big bag of Combos for a Spirit crew, only to discover they sell those on the plane. Doh!