MDF or Acrylic ones would be great! Sign me up for a set or two! I was also wondering if it would be possible to get something that marks or helps keep track of strike points as well; like sets of numbers or letters that would help keep track of them from one activation to another and who placed them? Then it would be easier to remember if an attacker has used that same strike point and will get the bonus for consecutive rounds of shooting to the same spot.