There are several Swiss Army Knives to choose from, but if you want one for your keychain, here are the best options to ...

All you need is this neat keychain. No, it doesn't just open bottles when you've forgotten to bring a bottle opener. This one also comes with a phone cord for convenient, on-the-go charging!

The good news is keychain tools exist ... which is priced at $20 on Amazon to date — is easily a box cutter, bottle opener, lid pryer, bit driver, and ruler, for starters.