Never run out of cash when you have the Cashstash Capsule/keychain from True Utility that provides you with a secure way to carry around some emergency funds with you on your keychain. It’s less than two inches long and about a half inch wide, so it hardly takes up any room on your keychain and it’s very light so it won’t add any extra weight. The capsule is great for when you misplace your wallet and need some extra cash or when you’re stuck in a cash-only situation. It’s made from aircraft-grade aluminum and it comes with a waterproof neoprene O-ring seal, so your money is always dray and ready when you need it. It features a split ring so that you can easily attach it to your keychain, bag or clothing. It also makes a great gift for someone you know who always loses their wallet and borrows money from you. It’s available at Amazon for only $5.80.