Coffee Wood Stain
No need to buy a stain for your next woodworking project. It only takes a few common household ingredients: steel wool, coffee grounds and vinegar. Place a steel wool pad into a mason jar and add about 1/4 cup of used coffee grounds and about 1 to 2 cups of vinegar. Close the container, shake the mixture,and let it stew overnight. Open the container and gently mix the stain. Using gloves, remove the steel wool and apply the stain to the project. As the stain dries it will become darker, so let the stain set for 20 minutes before applying the second coat. Repeat until you get the desired color.
Check out these Pro Tips for Using Varnish and Stain.