Look up ChromaCast Cc-SUPB bag ukulele padded bag. First saw one on Craigslist across town for $15. I got one on Amazon for $15. Has a 8.5" x 5" zippered pouch holds 3-4 mags and a skinny <12" zip pouch for your ? Haven't used it much, can't say how it will hold up. Looks Better than some I've seen.
EDIT: Geez, it's now $12.98 shipped with prime.