I made this fun sunglasses case for a friend's birthday. She loves yellow! So it is yellow inside and out. This is the pattern from Thread Riding Hood.
I used my beloved KAM snaps. I highly recommend getting a set if you don't already own the pliers and snaps. They are so amazingly easy to use and seem to hold up well. If not, you can usually repair the snap without damage to the fabric. (Just make sure to interface correctly.