|The mortar team (on the right) are better camouflaged than I thought.|
Figures are GHQ Afrika Korps individual infantry.
I've struggled to find an easy way of doing the same for infantry though. I've tried mounting them on sheet metal bases and storing them on sheets of magnetic 'paper', and that does work, but metal bases that are thick enough to handle easily are too heavy to transport easily en masse.
The type I found is 12.5mm (½") wide, which is perfect for the basing system I use, and it's cheap too — I think this pack cost me about five bucks. Three metres of tape (one pack) will do me 150 3-5 man infantry bases, or 240 2-man teams. That's pretty good value for money.
I'm keeping my eye out for some wider stuff (20mm wide) for mounting artillery on.
I've just stuck the figures straight to the double-sided tape on one side of the magnetic strip and landscaped over the top of it — I don't know about the longevity of that solution, and it may be necessary to revisit them in the future, but for the moment it's quick and easy, and seems to be holding quite firmly.