Scenario: Stolen Magic
Magic exists but only the fae (pixies, faeries, little flighty folk). Humans discover that with a hard will the magic can be stolen from the fae and used for unlimited potential.
Unfortunately for the fae, this means they are hunted, collected, abused, and misused by those that are in the know.
I see it as an excuse to draw little people in all sorts of magically fueled machines or even used by “wizards” to cast spells.
Need a candles? Keep a pixie in a jar, give him a good shake.