This is one of my favorite photos of my daughter and my oldest grandson.
I used Picmonkey to create this "poster" and then I had it printed at Staples in a 24 by 36 inch size.
I ordered the poster size frame online.
I absolutely love it!!!
So, go through your family photos. Find something you love and crop it so that it's just focused on the people in the photo and maybe make it black and white and see what you think. You just might have something you would want to make a poster.