LED technology has progressed massively and is now at the state where you can carry a device with the lighting power of a car headlamp but it only consumes 10W, weighs 200g and fits in the palm of your hand. I can ride my bike through the woods at night, as if it were daytime. All we need now is some technology that makes the woods less creepy after sundown and we’ll be all set.
Another big one for me is Wikipedia and the information sphere in general. I forgot what it’s like to have to physically go to a library to look something up or learn a new skill, amazing power at our fingertips. Showing my age a bit here.
What else? Computer aided engineering tools, cordless power tools, phones and computers in general, lithium ion batteries, my automated coffee maker kills it, drug technology, I like it all.
Hand tools are spiritual in a way that machine tools will never be. I love the texture and heft of planes. The simplicity and quiet operation. Working with timber and steel is one of the greatest pleasures in life.