If all you have is an old second-hand chair, paper plates, red plastic cups and warm leftovers, so be it! Purpose doesn’t mind. It won’t turn up its nose at your offerings and demand fine china and a five course meal.
There will be competition! Why not do few small things to make yourself stand out? I’ve been interviewing people in the professional setting for over 12 years. It’s often what is done/said before and after the interview that makes a person memorable (good or bad).
The hardest thing you have been through to this point is the thing you felt would break you until you bent and stretched and made it through.