These magnetic dice towers can be purchased alone, or as part of a complete set in some timber species. They can be separated in the middle to two lean halves, allowing them to be laid flat and level within our dice trays, stored in a drawer, and transported easily. They snap together and hold steady with strong neodymium magnets.
The exit point for dice sits approximately 50mm above the table, so it may well work with your existing tray. Simply set it up against the side of your tray and roll!