Hello! I'm looking at expanding our set of instruments for beginners to play on during class. I currently have 11 students and only 2 xylos, 1 4.3 octave marimba, and 1 vibraphone. For each kid to have their own board (with 2 on marimba), I'd need 6 more instruments. I don't really want to get 6 practice marimbas since they're a pain to move around- does anyone have any recommendations on how to get everyone on a board without spending an arm and a leg? TIA!