I needed a portable brow kit for travel that would fit into my tiny makep bag. Sally Hansen designed one that has two shades (what look like a charcoal and a light brown/taupe shade that works great on my light brown brows. Included in the kit are a tweezer, brow/lash brush, and a slant tip applicator brush. All of this in a kit that is less than 2x3 inches.
While this won't won't replace my normal at home brow routine, this is great for travelers. The color stays put and it does it's job well in a pinch.