So, you're camping, it's late, you just want to get to sleep. But first, you want to read some of your exciting novel! If, like me, you are poor and don't have a Kindle then you'll probably be stuck with a book. Unfortunately you can't take your angle-poise lamp with you as there are no plug sockets available, you can try with a torch but it's incredibly difficult/unconfortable/annoying to try and hold so you can lie down and read, trust me, look at some of the pictures! Hope is not lost - time to go old-school and whack out the ol' Gameboy Advance SP! You need the Advance SP, or it won't work! Strategically position the device, without cartridge, on your chest and power-up the backlight. It's incredibly powerful for such a small console and produces quite intense light if positioned at the correct angle. Now you can read in peace, you have your own angle-poise camping lamp!!
This also gives you the advantage of being able to play Pokemon, so you probably won't need your book anyway!