Portland Design Works has a great light set in the Radbot 500-Spaceship Set, which is "built to withstand rain and meteor showers to keep you safe from blastoff to touchdown in all conditions." The light set makes me feel more secure crossing busy streets--sometimes people have a hard time stopping at the crosswalks and the light really helps to get their attention. It's very well made and solid, I've taken it on bumpy trails clipped to my trunk and everything has stayed on just fine. It's also done great in the rain.
The Spaceship Headlight takes two AA batteries and has two modes, solid and flashing light. We don't ride at night, so I can't say how it does for lighting the way, but it really adds to your visibility, particularly in flash mode. I love the cool blue light on the top.
The blinkie takes three AAA batteries and consists of a 0.5 watt Japanese LED and has three modes--solid light, pulse, and pulse with flashes. The built in reflector is another safety feature and conforms to regional requirements to have a tail reflector. You have to press and hold down the button to get it to turn on, so it won't accidentally turn on and run down your batteries. The set comes with several attachments and hardware to mount it virtually anywhere you like. Mounting couldn't be easier.
For Halloween, I'm going to clip the blinkie on to my son's costume during trick or treating to make him more visible both to cars and to me. On a holiday note, I think this would make a wonderful Christmas present, the packaging makes a great presentation and this would work well under the tree or in the stocking.
Portland Design Works' website is wonderful--very organized, easy to shop, and visually appealing. I love their product selection and the demo videos. They have a modern and fun look, but the products are serious. Find the light set and other cool bike accessories HERE.