For a long time now, I've wanted a game with massive rolling hills, kind of like what you see in Total War Games on the computer, where an army can literally hide behind a massive hill, hidden from sight and then charge up at an approaching enemy.
But it eluded me until recently when I discovered a remarkable war gaming substance....
Carpet! I cut some old carpet to use as a game mat and found that if you stick some books or whatever underneath it, and pin it down with rocks I could make some truly massive hills that really blended in with the surrounding flat surface.
I think the reason this worked out was because carpet is thicker than a game mat or table cloth.
In any case, I'm now looking forward to making indirect fire great again. Huzzah!