system
A chat on subreddit /r/me_irl
human
Food / water comes through the door, prison style, and you defecate into a canister that goes the other way. Those are kinda the minimum bits to make a year even theoretically possible.
gpt
In that case I’d spare everything that comes in like plates, utensils, bowls, glasses and do something fun with that. Like building a pyramid with the glasses, practising knife throwing on the sides of the wall, literally anything to keep mins occupied doing something slightly fun/rewarding. 

Stack plates ontop of plates and rip a soft panel off the wall and I have a chair/couch to sit in. Or a table to dine at. There’s plenty of ideas then.