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 Still great, I just don't use it anymore since I feel it's outdated and loading speeds are better nowadays.
Walked into the store on boxing week and saw a roku stick on clearance for $10. Used it for years until the remote died. Used the phone app with it for a while until i found another roku kit on sale for less than a replacement remote.
A Roku stick is something you plug in a TV that has an OS you can use to connect to your wifi. You can then download different apps to launch different streaming services. This includes a Roku app/channel and also Netflix, max, Disney, Hulu, zues, prime, etc...