I like to buy an inexpensive white helmet with good ventilation. I clip a 180-degree red blinkie to the rear, a modest headlight to the top to blink during the day and be a solid supplemental light at night. I also mount a small action cam to capture my rides for review, to share, and in case evidence is needed after a collision.

I have been clipping the rear light to the elastic band that no longer seems to be used in newer designs. I'm sure I could fashion a mount for any future helmet if need be. I thought about spending the extra money for a helmet with integrated lights, but I don't think the front lights are as bright as what I can attach myself.

I ride year-round down to 5F and it's usually in the teens on winter mornings. Even at those temperatures I prefer lots of helmet ventilation. I wear a thin balaclava, and from 5-12F I may put up the hood of my light wind-breaker shell for an additional layer. But my head gets really hot, and a sweaty head gets and stays colder than a dry one.