The Key Wrap, by Campbell Cole, is a simple leather wrap that keeps your keys contained like they& in a key taco so they don& scratch your smartphone.
Key pouch, looks easy to do, love the button idea.
Leather Key Case ,Leather Key Holder by NJ-Leather, $25.00 USD
Nakota Rakuten Global Market: 7 cm total length of MOCA (Mocha) leather key case. Is an important key to stylish storage and mobile ☆ keychains leather gift Japan made
KEY HOLDERS, LEATHER KEY COVER, LEATHER KEY CASE, KEYWALLET, LEATHER KEY HOLDERS, KEY HOLDER OAK-032