This a project i started last year - and now it lives in a box! I picked these plastic hexagonal boxes up at a store that was closing. They cost almost nothing. (I think they held 'precious moments' figures!!) I am making them into 'modular' terrain pieces. They are getting doors & windows (portholes) and some have rooftop defensive positions.
I have a boat load of these - when I get enthused again I'll finish painting them. I thought about mounting them on boards, but now you can build a maze out of them - they function almost like hills. Maybe I'll bring them out to Yotta's next Lazy Sunday Tournie thing.