I was going to make a camera case with felt but since I'm still in my crochet mood, I decided to crochet it instead. This is really not a pattern since it depends on different cameras, but this'll give you an idea of how to make one yourself. :)
Chain 35 or until it fits around your camera.
Slip stitch the chain together and add a stitch marker to mark the beginning of the round
Keep sc (single crochet) until the length covers the camera
Sc back and forth as if you're crocheting a scarf to make the flap, make it as long as you like. Also add some button holes.
Crochet a rectangle for the bottom
Use yarn needle and scrap yarn to sew the bottom and the top together
Add the buttons in the back
Crochet the center of the circle with brown color yarn and the outer with white, button is optional
Attach it and add more details
Take 3 strands of yarn held together and make a loop
Attach it to the case and chain until desired length and this will be the strap
And TAH-DAHHH!! Your very own camera case.