LEDs are so easy to work with, and so small, that you can make almost any kind of light that is convenient for you. The first picture illustrates two I built for myself - a bar for reading charts, and a pocket light designed to use anywhere.

Other possibilities include:

• Mounted in an eyepiece case
• On the feet or sides of your scope (to mark where they are so you don't crash into them in the dark)
• Clipped to a baseball cap (to point light where you're looking)
• In the interior of your car so you can find things in your car without turning on the the "real" interior lights

LEDs are so easy to work with, and so small, that you can make almost any kind of light that is convenient - almost anything you need to find or see into can be modified to have a small LED lamp.