Wear a football helmet and smash through them while shouting "OH YEAH!"

For some reason I don't usually get invited to parties.

If I'm in the woods or some place where I know this is likely to happen more frequently (e.g. low-hanging branches), I'll wear a hat with a wide brim to give me a little warning. I also make sure I'm wearing my glasses to protect my remaining vision, in case of pointy sticks.

Most of the time (on my own in less familiar spaces) I don't. Sometimes I can hear or sense something beforehand, but if I'm already in motion it's hard to stop on a split second. Sometimes people I'm with are sharp enough to warn me about weird hanging lamps in my way, which can help. In familiar spaces, I'm generally aware of what's where and I can avoid low hanging obstacles a little better.

Traveling with my guide dog, though, is a different story. She stops for overhead obstacles so I can find them and decide how to proceed.

Wear my super villain Stevie Wonder shades and have several witty quips on hand for when it happens. I'm pretty cautious about what's around my head but nobody can avoid hitting things all the time. It's amazing when sighted friends do it. :D

As much as possible when I know I will be in unpredictable areas I walk around with an arm in front of my forehead. For instance I was at summer camp with bunk beds and partially through this method and partially through a luck of "blind radar" I managed to avoid low hanging things.

I have a cane that’s taller than me. So when I don’t have it extended for fast walking and early warning and it’s in close the handle will bump things that are about to hit my face