Drywall and a door (Lebanon Maine)

My mother has been getting older and I needed to move in to help her I've had to bring my family along with me and we've made the top of the garage garage a living area this was all very sudden and not planned and my wife had to leave her job due to travel issues when moving out here I'm so money's tight and we're asking for help we just need a few sheets of drywall even scrap any pieces will help and hoping a solid door for fire safety. Size isn't crucial I could always adjust the framing thank you for your help