Phone card holders are a nifty add-on, ... The Sinjimoru Basic Cell Phone Wallet Stick-On falls on the minimalist side, but still provides plenty of storage space.

3Pack Cell Phone Card Holder for Back of Phone,Stretchy Stick on Wallet Pocket Credit Card ID Case Pouch Sleeve Self Adhesive Sticker for iPhone Samsung Galaxy Android-Dark Green&Blue Gray&Black ...

Cell Phone Holders For Your Car. If you’re looking for a holder for hands-free calls and navigation in the car, you’ll want to consider where you’d prefer to mount it.

The Pocket Tripod is repeating its crowdfunding success from a few years ago, creating an updated, universal version of its incredibly popular credit-card-sized tripod that fits in your wallet.