Most effective use of $1000 to help homeless?

I was recently offered $1000 to create two sponsored posts on TikTok for a company that should not be named. I deeply want to use that money to do as much good as possible, preferably in the area of helping people that are homeless- a cause that I deeply care about. What is the most effective way to use $1000 to help homeless people? Go on the street and give $1000 worth of meals to the homeless? Pay for one person's rent for a month? Donate to a certain charity? What would you advise? :)