The shape of this narrow, felt-tip marker gives you the best of both worlds: The fine point helps with precision work, and the wider edge allows you to go bolder. The carbon-black, glossy finish lasts a full day. $6.81 (amazon.com).
*Essence Eyeliner Pen Waterproof - If you are looking for a basic black liquid eyeliner, I would highly recommend this one! About $3, goes on smoothly, stays on all day, doesn't flake or run, and easy to take off when you want to :)