I made these tags for my friend's classroom. She needed something pair up the kids into pairs, small groups and large groups. So I came up with this system. I cut tags out of cardstock using the Cricut Plantin School Book cartridge. I used red, yellow, green, blue, purple and orange. I then cut the numbers 1 - 30 out of each not duplicating the same number in the same color. If you pair up the same numbers together you get 30 sets of 2. If you pair up the same colors you get 6 sets of 10. You can also use them to group the kids odds and evens to get 2 groups. You can just number them 1,2,3, etc and have the corresponding # on their desk for the first day. There are a lot of possibilities for these #s. Laminated them and tied on a ribbon I got from Hobby Lobby. She is keeping them all in a bag and will pull out the ones she needs each time. But now she has a large variety to choose from.