Having a laminator and lamination supplies on hand as one school office supply is a smart way to make paper objects last. One laminator is probably sufficient to service the whole school. Teachers could then come down to the office and laminate signage for bulletin boards, vocabulary or math lesson cards, placemats and more. Laminating is easy to do. It doesn't take up much space. And, it's not at all messy. Then your signage can probably be used again next year.