Once you pick a peice out, it’s hard to spend too much time on it. both the ones I’ve done were quick one day builds. If your having trouble thinking of a piece use, and willing to do illegal connections, something with a clip on it normally works well. You can connect it to another clip, bar, plate, and I’m sure much more, in a lot of different ways. I tried to take advantage of that in this build: https://www.flickr.com/photos/97645378@N02/20397680124/in/dateposted-public/