Here was a game I made up to find whether or not a number was odd or even. I took a sheet of paper and drew a line down the middle. We would go through each number an count out that many bottle tops. Then place them on alternating sides of the line. When all of the caps are on the paper we would see if the sides matched. If they matched then it was an even number if they didn't match it was odd.
Then we played with the bottle tops. Lining them up in rows and stacking them . This doubled as a fine motor skill activity. We also sorted them by color.