Comment by nvarsj
Under $100:
Roll of medical tape for mouth taping at night. I finally sleep well with no snoring/mouth breathing.
Under $1000:
Plex server I put together over Covid just out of a divorce. I love films and TV, and storytelling in general. It makes it easy for me to easily watch my media and catch up on stuff. This was a great time/money investment - and helped my mental health a lot.