Hi Libby,
Thank you for your question. It really depends on the size of the area and your taste for color as there are various sizes and colors. However, you may want to look at this product of ours, A427, it's a magnetic dry erase white board, so your kids can also draw on it as well. Here is the link, http://kofflersales.com/p/magnetic-panels.asp?cid=864
Thank you,
The Koffler Team