Colorful, varied collections look pulled-together but still playful in a weathered grid. Let randomness and imperfection be your guides: Split up pairs, mix sizes, place pieces at different angles, and leave some spots blank. Mount the box on the wall at eye level—before you load it up, of course—or set it on a mantel for maximum delight. (The dice here are in an old wooden type tray.) To keep a display like this clean, spray it with a can of compressed air, standing about a foot away so nothing shifts. A glass jar (far right) can hold extras. Printer’s tray, check out etsy.com for options. Large apothecary jar (similar to shown), $34, westelm.com. Dice collection in type tray courtesy of Polly Dufresne. Dice collection in jar courtesy of Elena Holowaty.