Home smart devices in general. I'm avoiding Alexa, Siri or any other thing like that. Besides the obvious privacy issues I see about them, I can only imagine being alone at home, Alexa thinking something talked to her and responding in a distorted voice. No, thanks.

I'm considering a home assistant at some point, by setting up a proper network for the smart devices alone, but that's as far as I'll go.

for all the people saying smart devices/homes, you all should check out rhasspy/piper on github. It by itself is a TTS system but it's integrated into an offline smart-home system and a few other projects in the same vein. The links are on their git page and its pretty damn interesting. I personally use it for audiobooks after training my own voice but a lot of people want an amazon/google alternative. I may or may not have just trained a model on the same voice that amzn uses lol.

Oculus Rift. Would love a VR headset and the Rift is at a great cost point for it's level of function. No way that I'm locking myself to Facebook with a piece of hardware though.

Smart home products where I can't replace the OS with an open source one.