Something to keep in mind is to make sure that the things that keep you off the ground are of quality. Mattresses, shoes, chairs, and stuff like that are always good to invest some money on.

Also, blue-screen filter glasses if you're working for prolonged periods in front of a computer. Your eyes will thank you later

I also think a good water bottle is always good to keep at hand. Make sure that you're keeping yourself hydrated at all times