Amazon has an LED Desk Lamp [amazon.com]
with Three Modes on sale for $10.79 when you apply coupon code JBCV2BSO
The lamp can sit on a desk or be clipped to something (like a headboard). It has a touch sensitive button that turns it on, and also changes the lighting to three different brightness levels. The neck of the lamp is adjustable, so you can aim light where you need. And the base also has a cell phone holder.
It charges with a USB cable, and has bulb with a 5000 hour lifespan.