Steam Deck - since having kids I was really struggling to play games at all. I had gotten to where I was only playing phone games and switch games, but the Steam Deck has really enabled me to start enjoying my steam library again. If it broke I would buy another one instantly.

Bone-conductive headphones - I wear these all day. I listen to audiobooks, take calls, have them read out notifications, etc. It's also great to know that if I open a random meme video on my phone, I don't have to worry about the sounds of the video being inappropriate for my surroundings. They're so much more comfortable than traditional headphones.

My house - I got an insanely good deal on my house, less than what many people pay for cars. It's not the fanciest house, and it needed some fixing up when we bought it, but it's enabled me and my family to live with extremely low bills which has made my life very low stress. Houses are generally cheap where I live, but I lucked out and got the best house deal I've seen, and it's made everything so much easier.