Other options: double sided tape, double bubble (do they make that anymore?), double chocolatecookies, etc.
10 fingers, 10 toes. Try something that involves them all (eg: go paint some pottery, then play soccer).
10 is the number of sports in a decathlon. Make your own custom decathlon. A sample of ‘events’ could include: sleeping in, bacon eating, bowling, sundae making, board games, etc.
If you want to incorporate a little education into the gift giving…
10 is the atomic number for neon. Consider going somewhere with neon lighting (some restaurants have this), or playing Neon Lights by Demi Lovato.
10 = X in Roman numerals. Try playing with ‘X’ in the gift (eg: X marks the spot-use the Treasure Hunt theme).
10 is the sum of 1+2+3+4. You could give 1 game, 2 walkie-talkies, 3 shirts and 4 books.
The 10th century is associated with the dark ages (go somewhere dark like glow bowling/mini golf) and the invention of fireworks (which we suggest using only in locations where it is safe and legal).
1-0 are the only numbers in binary code. You could work in electronics/software here.
Check out our general birthday theme for more ideas around gifts, wrapping and presentation.