Ok so there isn’t a lot of crochet involved but I crocheted a length of chain with 0.5mm jute & used this to traverse a store bought opaque rubber iPhone 5 case.
I also used black jute (which was a lot thicker than I wanted) to make the yin yang motif & then used some accent beads from the wonderful Petra at ScorchedEarth
I rushed it slightly - would have preferred to take more time on placing the jute chains but it’s simplistic & in my opinion rustic