I love to play "Witchipoo" with essential oils... I have posted about this in the past, they are great for cleaning, scenting the air, pest control, ailments, etc.
Here are a few uses for Peppermint Oil...don't limit yourself to these...but I wanted to get you started with them.
Massage several drops of Peppermint oil on the abdomen to relieve nausea.
Add a drop of Peppermint oil to herbal tea to aid in digestion and relieve heartburn.
Rub several drops of Peppermint oil on the bottoms of the feet to reduce fever.
Apply a drop of Peppermint oil topically on unbroken skin to stop itching.
For poison ivy or poison oak, apply Peppermint oil on location neat or dilute with Vegetable Oil.
To relieve a headache, rub a drop of Peppermint oil on the temples, forehead, over the sinuses (stay away from the eyes) and on the back of the neck.
Place two drops of Peppermint oil on the tongue and rub another drop under the nose to improve alertness and concentration.
Diffuse Peppermint oil in the room while studying to improve concentration.
Rub 4 drops of Peppermint oil on chest and stomach to relieve travel sickness.
Add Peppermint oil to food as a flavoring and a preservative.
To deter rats, mice, ants or cockroaches, place two drops of Peppermint oil on a cotton ball and place along the path or point of entry for these pests.
Drink a drop of Peppermint oil mixed in a glass of cold water to cool off on a hot day.
Place a drop of Peppermint oil on the tongue to stop bad breath.
Mix Peppermint oil in a foot bath to relieve sore feet. Keep water agitated while soaking feet.
Place a few drops of peppermint oil on a cotton ball and place where mice are getting in and they will not come in.
Use a few drops of pepermint oil in a spray bottle with water or vinegar and spray in doorways and windowsills and ants will not come in. They run from mint for some reason. The same is true if you plant it around your house.