This is a product idea. It's based on a practical need and a desire to be fashionable.
Keys, check. Wallet, check. Phone, check.
This is the checklist I have when going anywhere. These are the things that I always have with me. For most people, I'm sure it is similar. We might add chapstick, maybe sunglasses, but these are the core items.
My theory is that there is room for a high end pouch, with just enough room for these items, but without allowing keys to scratch phones. I'm not talking about a purse, or man bag. It wouldn't be big enough for a laptop or an ipad, or a Kindle. I'm talking about a very small, but fashionable accessory for keys, phone and wallet.
Price point is $100-$200. It is something that shows that you care about being organized and professional.
The business has to be built around the concept rather than the product itself. Businesses have already made pouches, bags and cases for phones, but nobody owns the wallet, keys, phone concept. It's up for grabs.