diy passport wallet pdf pattern with side zipper pocket and credit card slot - I'd add a flap on each side that buttons closed around the whole wallet for added security (and perhaps a loop to thread a belt through)
The Traveler Passport Wallet sewing pattern. could be turned into cell phone pouch instead of passport
Cloud Doll - so sweet Cute sewing pattern Passport Wallet, pdf pattern, Birdful Stitches
The Traveler Passport Wallet sewing pattern - not sure how complicated this will be but willing to give it a try!