Xbox Series X. I have a Day 1 release, and recently cancelled my XBL Gold + Game Pass due to lack of use.

2020 Shelby Mustang GT350R. I paid $80k for it and then another $25k at Shelby American in Vegas for the signature edition package. Bought it new in 2020 and it now has about 1500 miles on it.

It was my dream car but I just never have the time to drive it.

90% of people here would have to say "my car".

A Fender Telecaster. I love it, but my health isn't good enough to let me play on it very much. Plus, I sometimes wonder if I should've gone for a lighter guitar...

My camera (Nikon Z6) has a lot of features I never use and probably never will. Bit it's still an amazing camera that I can use to take photos with that I couldn't with other Nikon cameras I could afford. So it doesn't matter if it has a weird feature I don't use when I regularly make use of a feature it does so well. Paired with an old 70-200 2.8 I have taken a lot of photos I would have previously not have dreamed possible with my older camera setups.

An ecoflow battery generator. Granted, it's a small-ish one but I got this itch to purchase one after seeing one in action while car camping ("I can use my hot water kettle while camping, how cool!") and when our city was warning us about widespread power outages from an upcoming winter storm ("to keep our devices powered up").

Ive gotten a sub woofer probably at ~$120 of value and a couple pool sticks (billiards) at ~$200-300 value of which I've never gotten to fully utilize yet

A Honda 2200 generator.

Fully use? Synthesizers. I just don't think that's possible.

Otherwise, I'm pretty good about using the things I buy. Maybe my HOTAS and Race Wheel, as those are the most niche gaming things I have. But price/per use is still not that bad, I put a lot of time into some of those games, I'm just not actively playing them as much anymore.