The Go-Comb is a high-grade stainless steel comb about the size (and roughly the shape) of a credit card. I'm sure you know what that means — it's a comb that lives in your wallet. Works well for both head and beard hair (the fine-tooth version works especially well for the latter), and it sports a smooth coating that not only lets it glide through hair and makes the comb easy to clean, but also helps prevent cards in your wallet from getting scratched up.

The Go-Comb comes in a variety of styles and colors — including a neat Brass Hexagon design — and goes for $13–$16 depending on which one you choose.