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LED flashlights are a major improvement over the old incandescent bulbs too.

That one is probably the biggest one for me. I used to bicycle commute in Seattle, and that meant a lot of night riding. Headlights were REALLY expensive and used a six volt battery in a “water bottle”. Now, they are cheap, ridiculously bright, and light.

I have one of those old D-Cell “police style” flashlights that I keep just to show people how LED’s have changed the whole flashlight thing. I use a c-cell LED flashlight from costco that puts out more light than an entire bucket of those old incandescent ones. And it has a beam that is adjustable from very wide flood to pencil beam. I live in a home where I’m surrounded by seven acres of lawn surrounded by forest. I can use that thing to spot things in trees well over a hundred yards away. The old incandescent looks like the light of a matchstick in comparison.

And the batteries last a very long time.