I started this to just test out an idea I had, but it turned out pretty decently. Just a very simple mod that I think can enhance the game. Many people like the idea of being able to carry a light instead of having to place torches. This mod simply does that -- here is a video of it in action:
If the player is holding any of the following, the immediate area around the player will light up as if a torch was placed. Items that emit light:
end portal frame
Feel free to write to me if you feel this list should include other things.
It will not emit light if you go fully underwater, but will re-light as soon as you emerge again.
It may not emit light if you're in very dense tall grass or similar two-block high pass-through blocks. I think this is realistic though.