Simple poop bucket. I use on the X1C. This uses 20x20x2 square magnets. I wanted something that was simple and not too large as I just print with 1 material at a time, so my printer does not poop too much. :)
Magnets: Amazon.com : 110Pcs Self Adhesive Magnets Squares Flexible Sticky Magnetic Strips Tapes Peel and Sticky Magnet Squares for DIY Crafts, School Art Projects, 4/5" x 4/5" x 0.08" : Arts, Crafts & Sewing