Games (inc Online)Teh Mine
I think using the old idea of builders, crafters and miners would be good. We don't as such need an economy but just be like...
Builder - I need some of this block. Miner - I've got some in my chest, or, I'll go mine you some.
Oh! :-$
Nice to know you're getting back to basics. Just don't lather yourself up in the presence of others.