We have a small classroom. I have 3 built in bookshelves that cannot be moved and one table. I have all the toy and blocks in the shelves. We have a tiny library area. I also have a small dress up and kitchen area. I teach 1's on Mon and Wed and 2's on Tues and Thurs. On Wed and Sundays the room is used as the church nursery. The room is all carpet. I would love to have more centers but I don't know how to arrange it. If I have a art center it has to be on the main table. Therefore I cannot put the puzzles there also. I have 8 twos (even though most have already turned 3) and 9 ones. I would love a water table or sand table but afraid of the mess with the carpet. Our room is u-shaped. All the toys and circle time are on one side. The bottom part of the U is the library and kitchen/dressup. Going up the other side is the table and then a crib and changing table.