My wallet is about to burst at the seams. This year, I will get around to throwing away those receipts from 2008 and slimming down my wallet once and for all. Coin (preorder at $55 for a limited time) is going to help out a lot when it ships Summer 2014. If you also have credit, debit, and gift card overflow, this slim gadget will consolidate all of that plastic into one card. Each Coin holds data for up to eight cards at a time, and you can use the card at any cash register or ATM. A small, Square-like device that plugs into your phone's headphone jack will sync your cards with the Coin mobile app.

Every time you're ready to make a payment, tap the button on the front your Coin to select which card you'd like to use. If it's a credit or debit card, the screen will display which brand (American Express, Visa, etc.), the last 4 digits of the card number, and the security code. There's also low-battery Bluetooth built into Coin that detects when your phone and Coin are far away from each other. If you've left Coin at a restaurant, for example, you'll get a notification on your phone.

—Nicole Nguyen, assistant editor

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