Great idea! We are always looking for mixing boards. I have been using the lids off large plastic pails. We do have an election coming up too! There's just one problem - most of the election signs are of thin plastic like garbage bags which are then pulled over a wire frame - these are much cheaper than coroplast ones. However, I did see a coroplast "house for sale" sign on a telephone pole on the way home; it's illegal here to hang a sign on a telephone pole - better do my civic duty and take it down!
