Travelambo Bifold Multi-Card Wallet The Travelambo Bifold Multi-Card Wallet ($15) is currently one of the bestselling items on Amazon, and for good reason. It holds a ridiculous amount of stuff — the design includes 15 card slots, one ID slot, and two long zipped slots that will fit cash or even an iPhone. It also comes in 20 different colours. Image Source: Amazon Travelambo Bifold Multi-Card Wallet $15 from amazon.com Buy Now