Two 4x8 plywood boards for benchwork. Either L shape or 8x8 box 4 remote control switches (2 RH and 2 LH) One 90 cross One 45 cross One bumper All the O27 track you need but no half curves or straights. Ready? GO! Yeah.... OK. this is just my cheesey way of asking for design ideas since I'm clueless. This is the best I came up with. (My figure 8 is off because I used straights and curves to make switches and the crosspiece.) Edit: Oops... One too many switches. None left for the side rail and bumper.