Glue tin cans to a lazy susan for the arts and crafts table. You could make it twist and put it in the middle of a table with four students. Then they could like push it, when they needed something on the other side.
Milk crates zip-tied together on their sides so that a bench seat fits on top and red bins from Lowe's can slide inside them. I don't have any milk crates, though. I also don't know what "zip-tied" means. I would use different colors.