Olives
Rolled-up cheese, turkey or ham with a vegetable (can spread butter mayo or mustard on the Roll-Up)
A piece of cheese
A boiled egg
Babybel cheese or similar small pack. Trader Joe's has a small snack pack of salami and cheese slices.
Mixed nuts
Sausage: Cut it in pieces, add a piece of cheese and stick a toothpick through them.
Vegetables, plain crunch or with dip if not too messy
Cream cheese rolls: Roll some cream cheese in a piece of salami, prosciutto/cold cuts or around long slice of cucumber.
Parmesan cheese crisps: you can make these yourself, but Costco has Whisps which are great and stay crunchy forever. Maybe the crunch keeps you awake? Trader Joe's just started carrying the same this week in my store..it was on new item shelf and in a smaller bag than the Whisps.