All-purpose cleaning solution: combine lemon juice, vinegar and water in a spray bottle. You can use this for all of your counter tops or shower/tub cleaning. It does a decent job on windows too.
Cut a lemon in half and sprinkle baking soda on the cut section. Use the lemon to scrub dishes, surfaces, and stains. I cleaned my whole stove-top with one lemon half and 1/4 cup of baking soda.
To make furniture polish, mix one part lemon juice and two parts olive oil.