More to explore:
Magnetic Tic Tac Toe board out of an Altoids box for kids while waiting. Great to just stick in your purse
tic-tac-toe with a Valentine's twist!
Paint your own ladybugs vs. tadpoles tic tac toe game. Tutorial at AttaGirlSays.com
Lego Tic Tac Toe
DIY Portable Tic-Tac-Toe
On-The-Go Tic Tac Toe ~ Creative Family Fun