You can get a portable diffuser and use it when you are outside or somewhere where you can't plug in your regular diffuser.
Essential Oil Blends
There are multiple uses when blending essential oils. Some are topical and a few can be taken internally. One of my favorite ways is aromatically, and my absolute favorite aromatic way is with a cool mist diffuser. There are other ways, including smelling straight from the bottle, placing a drop on your pillowcase, or putting some on a cottonball or tissue and placing it in your car or on your table. Try making room sprays mixed with water in a glass bottle so it's easy to access whenever you need.