Small simple table numbers for your classroom use, the multicolor version! In this product, each table number has its own color.
For ease of use, print on thick paper and/or laminate. Attach a small piece of velcro the corner of every desk, and to the back of each table number label. Attach the numbers to the desks, and switch around as you move desks throughout the year. This saves you the trouble of taping and scrubbing off the stickiness later, and allows you to quickly switch students in and out. :)
Another idea: To help students keep track of supplies, label buckets belonging to each table with their corresponding number.
Please let me know what you think!