Where we live it gets VERY windy most of the winter months. Last winter our screen door flew off and landed on some toys ripping a big old hole in it. It's the perfect size for flies to find their way in and join our family. After a year of it driving me nuts I decided to make it my quick project of the day. Here is our nice hole before. It is about 9 x 9 inches.
I took a regular needle and thread and a piece of screen we had in the garage cut to cover the hole.
I started in the corner and made a knot. I sewed in a zig zag around the edge. When it got to the point that I couldn't get the needle in and out on the other side by myself I enlisted the 6 year old to help. He was of course thrilled because he got to sew!