1. Uploading the photos to share with friends
2. Keeping a travel log
3. Buying a fridge magnet for each state or city visited, and stick them on the fridge
4. Marking the places visited on google map
5. Keeping the ticket stubs eg entrance tickets to museums, bus tickets, air tickets, and so on.
6. Printing the pictures and putting them into photo albums
7. Buying a T-shirt with prints of the state or city visited