I have just made some frames (IKEA box frame, white mount board, 70 2x4 white bricks per frame, and super glue) to display some of my minifigure collection:
Really pleased with the results (and even my wife is happy to have them on display in the house). I am however a little anxious about discolouration as some of the minifigures, especially the Star Wars ones, are reasonably valuable. I will hang them up the stairs in our house which does face North, so may be worrying unnecessarily. However would like to understand if there is anything else I should be doing to protect them. For instance, is discolouration due to UV light, and can you buy a clear UV film to put on the perspex?
Would love to find a way to put my collection on display to enjoy it, but ensuring that I don't ruin it in the process.