Everyone can think of a favorite song or two (or three) which can easily be translated into a fantasy rpg concept, be it an item, plot, location, or what have you. Just take the lyrics of your favorite real-life ditty, and go from there!
This is a scroll for every rumor or tale you might here from a friend or in a bar.
The characters are unwittingly embroiled in a rebel organisation, and must lead the Black Shield fighters to victory against the evil Halar, seeking out new hideouts, rescuing people from towns and generally doing what Robin Hood would have done in their situation.
The idea of using tattoos to contain magic powers is not a new one. The Ink gauntlet follows the basic premise of using rare and precious inks to inscribe spells into the skin of a mage or would be spell-imbued person. Some of these inked spells might be permanent, while others might fade after being used once, or a preset number of times.