Some do. My last full time role had some $100/month stipend for personal supplies. Pretty much paid for my internet bill in that time.

Another before that had some 3000 dollar a year stipend for approved office supplies over the pandemic; basically anything that wasn't groceries could be put on there. I even fancied putting a PS5 on there at once point, but then realize high quality office chairs and desks would drain that stipend quickly.