One of the BEST things I did for my children growing up was to allow then an entire Wall, that they could actually write on, paint on, there friends always thought it was so kewl to be able to write & sign their names and such. It was well known to them that This was the ONLY wall that could be marked up & they Never wrote on any other walls! Not ever! Everyone said I was inviting trouble, but it turned out to be an outlet of endless creativity!

Two coats of paint when we moved & it was gone. We pre washed with something to de-wax the crayon,,,good as new!

The kids are 27 & 22 and they still remember this wall & tell me that when they have kids they will provide the same. Also someone mentioned magnets...That was used ALL the time as well! I had tons of fun..lol