How about, create a war map. This could be a map of Stalingrad, Berlin or any large city in WW2 or otherwise, create a region of the CWBP showing troop movements, unit encampments, HQ sites, forward operations. This could be a bombadier's map showing bombing targets in an industrial region or port. Perhaps Napoleonic war, with formed units ready to face off in a battlefield. Lots of ways to go on this - though pretty much a city or regional map works best.