Yes, it's important to remember that EOs aren't benign--they're rather potent little mixes which can do harm as well as good, especially if used improperly with regards to mixing. If you're applying an EO directly to your skin, in MOST cases it's best to mix it wth a carrier oil (to avoid burns, etc). Jojoba works fine as a carrier oil; so do avocado oil, apricot kernel oil, grapeseed oil etc. Avocado does smell kinda avocadoey, though!
I WO my hair, so occasionally I rub a little jojoba into my ends to keep them moist. I've used tea tree oil on pimples before (diluted in a carrier, again; otherwise you get all red and itchy, not good!), and I've used lavender as a massage oil. Neither recently, because of pregnancy. Lavender's also lovely in an oil burner, of course.
Other oils (not EOs, just oils) that I use for body care include coconut oil for my elbows (and feet if I could be bothered), emu oil for my psoriasis, olive oil for my body in general and Bio-Oil, at the moment, for my torso in order to hopefully ward off stretch marks.