Terraforming Mars Player Cube Trays

Each tray uses 4 magnets (6mm diameter, 1mm deep). The magnets I found were somewhere on Amazon, and measured about .85 mm...if you have magnets thicker than those, extend things. (Or message me what you need for magnet deepness, and I'll toss another version up for you.)

The initial design didn't use magnets, and I was concerned that the trays would bounce open inside the box. There is also an published design for a tray to hold these trays vertically, which I was going to add magnets to as