This is a Magic The Gathering counter that I find much more useful than memorizing or interrupting the game with constant questions. It's an improved version of a model I discovered around 2 years ago.

For this counter, you can use 3mm X 2mm magnets with both female adaptations. The pockets are designed to accommodate non-magnetic usage as well, ensuring versatility. I'm currently working on version 3, where I plan to add an interlocking feature for seamless connection, and possibly create a separate magnet version for even more convenience.