One of the easiest ways to add the power of a sign to promote a product or a business is with business printing on magnetic calendars, business cards, refrigerator magnets and more. There are designs for custom commercial quality advertising media for use on car magnets and magnetic signs to name just a few business printing applications that are available to order from a printing company.
Your primary requirement is to find a sturdy coffee table frame. Instead of throwing out your coffee table, reuse it! For best results, choose a square frame.