Do you play 40k or AoS with models? Than boy do I have the solution!
Metallic resin movement trays that your magnets models will stick to! These are all set to be the same size as the bases of your models. This lets you measure direction from the tray itself as well as the tray not getting in the way the rest of the battle.
Get these Ferris movement trays and keep your models right where they belong, where you put them!
There are different sizes for each base size as well as a few different configurations in other listings for larger mobs.