​We don't suggest playing a game of tic tac toe with these clear marbles with young children because, as we mentioned before, they could be a choking hazard. But, I have a good idea for you. Use bags of Goldfish Colors crackers. You might already have those in your home for a snack for your kids. They come in multiple colors in the pack (orange, red, and green). Use five of one color for player 1 and five of another color for player 2. I actually did that with my 5-year-old nephew when I was visiting for his birthday. My brother had picked them up for the goodie bags and had extras. We played for a little while before he told me, "This game is making me hungry" and very quickly ate all the pieces.