Olive Oil, the same stuff that you use to cook with actually is a wonderful item to have on hand for several ailments. For these purposes, you will get the best results if you use Extra Virgin.
Constipation: Yup, we all get it and it is uncomfortable. If you suffer from occasional constipation you can take 1 teaspoon of Olive Oil mixed with some Lemon Juice on an empty stomach.
Ear Wax Build Up: Ok, we don't like to admit to this one any more than constipation! If you have an ear that is blocked and have had problems in the past with wax buildup warm up some Olive Oil so that it is just warm to the touch. Place a few drops into the ear that you are having problems with and lie down with the ear that has the oil in it toward the ceiling for a few minutes.
Place a soft cloth over your ear and roll over so that the ear is to the ground and lie that way for a few minutes. This will allow the oil to drain from your ear, taking the wax with it. If you think you have a perforated ear drum DO NOT attempt this, seek medical attention.
Moisturizer: You can even use Olive Oil as a moisturizer. Simply massage into affected areas and let soak overnight.