You're leaving town and a friend is going to watch our dog at their place for a few days. This situation can be stressful for a dog especially if it is a high energy dog. Here are few things you should considering bringing to the dog sitter:
Food and approved treats
Food/water bowls
Leash and collar
Some favorite toys, plus some bully sticks and a toy to chew on
Kennel (if the dog is crate trained)
Leash, collar, poop bags
Enzyme cleaner and paper towels ( just in case!)