Ask your boss for an early christmas bonus. "Hey look I'm having a really hard time here. Money is very tight and I can't afford to keep electricity running at home. An early bonus would keep me more productive than if I was bouncing around public libraries and coffee shops".

Then use the bonus to buy what you need to live in a camp ground. Tent, warm sleeping bag, etc. There's a world of difference between intentionally-and-planned-for-homeless and forced-homeless.