Never let anything with even a remotely "interesting" shape go to waste: Some of my kids old Mega Bloks pressed into service as modular machinery/pipeline junction boxes with the addition of a few bits and bobs. They integrate fully with the GW pipeline kits allowing me to do layouts with right angles, t-junctions, four-way junctions, etc. More modularity FTW!!! And the Horizon Creation 3D bits are perfect for detailing these kind of terrain pieces. Can't get enough of your stuff.