An e-bike. I used my regular bike for errands but the e-bike just made it so much easier to pedal in high winds or when I was hauling my trailer full of groceries. Plus it increased my range because I knew I could go farther in the same amount of time. I bought a class 1 e-bike so I always have to pedal, like a normal bike. Because I use it more, I think I actually get MORE exercise despite the assist. I really love it.
I live in a cycling-mad but very hilly place. They love it here. To give you an idea of the massive impact ebikes have had, the average cyclist age has jumped up twenty years in the last few years.
It's not unusual to see octogenarians blasting up hills now. They've been absolutely revolutionary
A lot of people make fun of me for having an ebike "it's not proper cycling etc", but they all want to ignore the fact that without it, I would be driving (as they are).
Yeah, it's pretty BS. No one would ever make fun of someone driving a car for not being 100% human powered.
I will say that the only time I get a little uptight about ebikes is when I come across them on trails/paths that are designated for non-motorized traffic only. Somehow people think that motorized only means combustion engines.