I tend to sit in darkened rooms (working on my internet tan) but wanted to be able to see my Mendel print so I made this very simple bracket to mount CCL lamps to a mendel.
You need to print 4 brackets (2 pairs) for each tube you want to mount. I have 4 tubes on my mendel so that's 16 brackets. Each pair needs a 4mm nut and bolt. 4mmx25 bolts are about right. I went for blue CCLs as I happened to have them already. Printing the brackets in natural PLA means the brackets themselves act as a sort of diffuser and glow.