If you're using photos printed on photo paper (and not just ones printed out on printer paper), use Ultra Thin Glue Dots or Mini Glue Dots to adhere the photos to the paper. Glue Dots are acid-free and lignin-free so they're great for archiving your photos in creative ways like this!
10 ways to make someone smile: 1. Write a note to say “thank you” 2. Set a fun screensaver or desktop on their computer 3. Buy them their favorite sweets 4. Send them an unexpected card 5. Do their chores 6. Make their favorite breakfast 7. Wrap up a surprise present 8. Make a mini photo album 9. Give them a day off 10. Put together a book of their achievements