Our living room is 40' x 18' but the ceiling lighting is just 6x5w LED (used to be 50w Halogens). This means that the railroad sitting on one corner doesn't get enough light to be able to work easily. Hence, I decided to install some "under cabinet" LED puck lights. Thinking about how to do this without annoying the other half led me to think that I could use her pile of Jigsaws that sit on top of the glass cabinets which are directly behind the railroad. I thought that, if I could make a strong structure out of my stock of 5mm foam core, then I could hold it up by sliding the back part under the jigsaw boxes.
The foam core was cut with channels from my 'v' shaped cutter. This enables me to fold the foam core easily. The result looks like this.
The puck lights look like this.
The lighting set came with four lights. The finished article looks like this. (Sorry about the Captain Kirk photo at an angle. My wife told me off for that - she is the Star Trek fan.)
It's not perfect but it is the best that I can do, given that we rent. At least, I now have consistent lighting across the board which is brilliant.