essential oils

Kr
Everyone tell me what essential oils you use and for what? I've recently become really interested in them. 
I use:
Rose geranium for ticks
Peppermint, lavender and eucalyptus for ticks
Lavender in my sons bath and diffuser for an easier bedtime
I've used eucalyptus for a sinus headache
I've put lemon in the dishwasher 
Today I used pine needle to wash my floor
And I'm going to try putting eucalyptus in the washer when I was my sons stuffed animals to help get rid of dust mites