I recently built myself a dozen asteroids to use as scenery and I find having 3D asteroids on the board really helps the aesthetic of the game. I spent a while looking for guides and during that search discovered that pretty much every guide assumes that the reader lives in the US and so uses and named US materials and stores. This wasn't a whole lot of use to me, what with being located in England and so I went about writing my own and figured that it might be useful to the lovely people who populate this forum-