What's the cheapest thing you had bought that by the end of its usefulness made you say "wow, this was worth a lot more than what I've paid for!"
Mine... My Xbox 360 slim only costed 129 euro back in 2012 and to this day still work like brand new, you would think that the disc drive would stop working but no. Never had the need of open it or clean it's insides. Still great, I just don't use it anymore since I feel it's outdated and loading speeds are better nowadays.
Stackable prep bowls for the kitchen. They're about $6 a piece and I have eight of them. I got sick of constantly running out of bowls when I was doing things like chopping lots of veggies for a soup or marinating tofu. I expect to reach the end of my "usefulness" before they do.
Similarly, I have a set of 12 rounded stacking mixing bowls. I use them a lot for tossed salads, but they are also useful for dough.
I don't know why, but I read "stackable" and my brain went to "collapsible". Was flabbergasted anyone was trying to mix dough in a rubber flimsy container lol. +1 for the stainless steel. All of the non-stick coating pans and pots are a complete scam of wasted money. If anyone out there hasn't purchased stainless steel, just buy one pot or pan when you need a replacement. You'll quickly realize you now have that item for life and it's safe to use any cooking utensil you want.
I have really fallen in love with my carbon steel skillet for general purpose cooking, including more delicate food like eggs. It took some time to get the hang of cooking with it and I still haven't quite gotten the seasoning right, but it's a sturdy piece. I also have a cast iron skillet, but it's much heavier and I've never been able to get it to cook eggs. Since I started using the carbon steel for eggs, I have basically stopped using our non-stick pan.
I actively use a couple of appliances with a nonstick interior, an air fryer and a rice cooker. I just try to treat them very nicely but I know they won't last forever. At least the parts are trays or liners that can be replaced separately from the appliance.
I also have a very nice 3 ply stainless steel pan, but I find that I don't pull that out as much. Maybe because I'm usually not making the sorts of recipes that it excels with, like ones that use the fond to make a pan sauce.
When I first moved into my own place I needed a few pots and pans to cook. I bought 2 cheap aluminum pots with a non-stick coating and the coating is starting to disintegrate after like 3 years and light usage.
I should have just spent the extra 10 bucks to get cheap stainless stuff.