I attended a training last year during which the presenter shared this great idea for extra (and easy) bulletin board space. I have an ugly old green small chalkboard that is not magnetic and is all marked up. I covered it with this brightly striped vinyl tablecloth and then sprayed the entire colored surface of the tablecloth with spray adhesive (3M brand, found at Home Depot). It stayed sticky all year long, and was an easy way to display sentence strips for word work prefixes, suffixes, and roots that we explored weekly. The adhesive is clear and does not show, but it allows for easy movement of items on and off it throughout the year. If your stickiness wears out, you can just spray another coat of the adhesive over it.
Voila!...another bulletin board space with no need for stapling or tacking.