Compact, stick on / clip on magnetic LED lights. They're brilliant. Because we can get so flippant about wanting to put our lights in a certain place right? Osram has come up with their own version of them, and its in the form of the Cuby light.
Skipping magnets and adhesives all together, the Cuby's clip can easily attach to a bike's handlebars, a hanging rack in a closet, or even your finger as an ultra-modern flashlight. It directs 20 lumen and its nice enough for you to probably want one. Going for $25!