Men’s Journal aims to feature only the best products and services.  If you buy something via one of our links, we may earn a commission.    Everyday carry  enthusiasts obsess over great  men's accessories  like  sunglasses ,  wallets , and even  headphones , but when it comes to usefulness, you can't beat a great multi-tool.  Gerber  is one of the biggest players in this arena and there's been nowhere better to score a deal on  the brand's best multi-tools  and even its  pocket knives...