If you flip a dice tray inside out it makes a decent hill for #alphastrike. Ideally it would be a bit shorter and a more natural colour. A way of securing the corners either way (magnets instead of snaps) would allow for two different colours from each hill.
Maybe augment with toppers for more variety (say, grey and brown, then green, white, and tan toppers.)
Also magnets to secure modules together and some supporting shapes like half hexes.
