Comment by petabyt

- portable Camera lighting (doubles as a general purpose floodlight) $30

- Literally any tool that improves productivity/quality (impact wrench, ifixit screwdriver set, also applies to software)

- high quality furniture/desk/tables. Not the cheap Walmart stuff that falls apart. Can be hundreds of $ but I've been lucky enough to find good stuff for free often.

- 4k display ($300)