Here's a quick trick that uses hot glue and a Popsicle Stick to hold a minimal drywall patch and get that hole fixed in a jiffy. This kind of repair is for small holes, and is especially good for walls that have been textured so you can minimize the size of the patched area. In textured walls it can be very hard to mimic the wall texture over the entire area of a larger traditional square patch.
-Pencil and Paper
-Hot Glue Gun and a Glue Stick
-Popsicle Stick or Other Strip of Wood
-Needle Nosed Pliers
-A Chunk of Scrap Dry Wall
-Sand Paper (220 grit)
-A Flat Scraper or Piece of Cardboard to Apply the Joint Compound
(So all the normal stuff for patching the wall + a hot glue gun and a piece of wood)
If you're lucky you'll be able to recover the original chunk of dry wall, but I'll show you how to make a replacement chunk if you were unlucky and yours fell into the wall or was devoured by wild animals.