Super easy magnet board using a metal roofing shingle from Home Depot ($0.95 ea). The trick is to use a spray adhesive (any brand, inexpensive is fine) to adhere the base sheet. After that layer away using your favorite scrapbook adhesive and embellishments. I used my Cropodile (amazing tool) to punch the holes and ran velvet ribbon to hang the board.
I custom make these for craft fairs, as gifts and taught as a workshop. Cost $5 ea
*I have also glued round magnets on the 4 corners to hang in a school locker. Perfect size.