I've wanted one of these olive oil sprayers for some time.
Olive oil isn't inexpensive, and think of how much you waste. I love to use olive oil for roasting veggies and would use so much less to be able to mist in the veggies rather than pore it on.
I would also use this to spray baking pans instead of using the non-stick cooking spray.
Do you have exotic oils like pecan, walnut, and other expensive ones that you use for salads and such? This is the perfect vessel to deliver a controlled and conservative amount of oil without the waste.