I've had a couple of these Spiderfire lights, $35, and I've loved them. Run on a Trustfire 18650 battery (2 for $10, only need one) plus charger (about $5). Very bright. 900 lumens, but also has a half-brightness mode. Need a bicycle mount for them, dealextreme has lots of choices for those for a few bucks. If you're interested I could look up the exact sku's in my original order.
If anyone hasn't used deal extreme, you should know what to expect:
-It will take several weeks to receive your order. They send it by the slowest mail possible direct from China. The envelope is half in Chinese. I usually forget I had ordered anything by the time it shows up
-You get what you pay for. Generally the stuff might work, or it might not. It might not last very long, and it might not meet their claims, like how many lumens. A bit of luck is involved in finding a good product.
Sometimes I buy stuff from them with the expectation that if it doesn't work as expected it's cheap enough to throw it out. I haven't bought anything from them in a long time. If you are OK with that, then you can get some good deals.
I have a 600 lumen bar mounted light and a 250 lumen helmet mounted light. 250 lumens isn't quite enough if it's completely dark, so I use both if I want to go fast on unlit bike paths. The 600 lumen light alone is enough, but it's nice to have the helmet light in case the main one dies.
The gloves I use are basically the same as these.
http://www.backcountry.com/dakine-scout-glove-mensThey have a breathable membrane that blocks wind, and a removable liner for extra insulation and added dexterity without cold hands if you need to unlock your bike or something. They should be good down to about 10 for me, but I might be cold before I get moving.
Below about 15 I use my ski goggles and a balaclava that covers most of my face but not my mouth. I don't like having my mouth covered.
My feet get cold below about 10-15, so I'll wear waterproof=windproof hiking boots and wool socks.
At some point my legs get cold in just jeans, so I might add a base layer under them. In extreme cold I might wear my ski pants, rain pants, or windstopper pants (xc ski pants that are perfect for biking since both are aerobic) to block wind. None are insulated, so I might need insulation under them.
If it's below 0 I probably drive to work.