Doesn’t have to be a thing you bought. Just some thing you didn’t have but then once you did it expanded your scope of actions.
The first obvious example that comes to mind is a car. Plenty of drawbacks to prevalence of cars, but being able to go where I want when I want, and far away, is very transformative.
I’m interested in other examples of things that aren’t just useful, but that open new possibilities.
A low-powered zoom microscope. I can again look at and work on tiny things, fix jewelry, electronics, remove splinters. Use it WAY more rhan I ever thought I would.
For anyone interested, just Google “stereoscopic dissecting microscope used”. The ‘used’ part is to makes it less expensive. They can cost a lot. I used to use my lab sonicator water bath to clean my jewelry, and our dissecting scope to check the jewelry to make sure all the skin crud is gone from every crevice.