My brother and his son came to visit recently and, given that we were all going camping together with 2 tents, I figured I'd make a second camping light. Be warned, you will not see an exquisitely machined housing, beautiful contrasting materials or a fancy driver set up. I cobbled it together from bits'n'pieces lying around, including an aluminium box a friend gave me when he left town. I didn't take as many pictures as I thought I did, but you should be able to get the gist of it 
Thick alu U-channel with holes drilled and tapped for LED, with a bit of lapping/ polishing where the LED will sit. The main guts of the circuit (minus USB charging board is in the background) - spare 16mm XM-L T6, KD V2 7135 board with 5 of the chips removed (cheaper to buy the board and scavenge than buy the chips separately), switch scavenged from work workshop and parallel pair of scavenged 18650s (~4Ah and no self discharge after a week, PCB wired in later): 
LED in place. I've given up on 16mm stars, I just can't seem to get the holes right for the screws. 20mm for me baby!
More pictures of the guts, more or less in place. All the gubbins was hotglued to the thin aluminium cover later. Everything with an exposed connection was taped up to prevent shorts.
Fished around in my box of miscellaneous screws and found 4 motherboard risers and 4 matching flat head screws. Drilled and tapped 4 holes for them, screwed 'em in and 5min epoxied a piece of 2.3mm thick lexan on top. Then cut out appropriately sized bits of translucent plastic (bottom of a Steriline box that we keep worm plates in at work), and 5min epoxied them in place. Cut a piece of alu into an L shape and used that to hold the switch and seal up a larger than necessary hole in the cover. There's no purpose to the mismatched screws on top, they're just to fill holes that were already tapped there.
see, told you it was ugly. My brother, the ungrateful git that he is, thinks it looks a bit like a sedan our dad had in the '80s.
Couple of "action" shots, mostly just to show how the plastic diffuses the light from the LED. On low it's a nice night light, medium is good for in the tent and high is handy for walking to the toilets and avoiding bullfrogs/ feral cats eating our leftover pizza etc.
Best of all, I can charge it from the car battery using a 12V>miniUSB adapter When I come across some piano wire (ooh, just remembered I have some old guitar strings!) I'll add a little harness so I can hang it from our tent ceiling or above my lathe/ workbench.
