I absolutely LOVE this activity. It's a great way to get the students interacting with each other and learning at the same time.
I used this as a first day of school activity this year. I had each student grab a note card when they walked into my classroom. Then, they had to find their three equivalent forms to find a group and have a seat. It got them out of their comfort zone and interacting with their new classmates.
There are also blank cards included for you to incorporate your own!