Though some wood may not withstand every accidental drop, others can actually handle more damage than plastic. Available for iphone models 11, 12, and 13, nimble makes recycled plastic phone cases. As /u/bbsittrr posted, the most rugged units have a hard outer shell (polycarbonate) and a soft inner sleeve (some sort of rubber including silicone). After all, polycarbonate is just about everywhere; It is an extremely hard plastic that is often utilized in bulletproof windows.