PelaCase is a Canadian company that sells biodegradable phone cases that compost in 6 months to 2 years. In many designs, this company sells plastic-free screen protectors (which can also be used for smartphones and watches) and compostable radiation reduction tools (that redirect up to 80% of electric-magnetic field coming from your phone).
Biodegradable phone cases are better than recycled plastic ones, because if they dropped down a drain or into the sea, they would still break into microplastics to be ingested by marine creatures. Same with sunglasses (save recycled plastic ones for pottering around the garden, in case you lost them at sea).
This company also makes compostable phone grips, which feature a comfortable adjustable loop for people that keep dropping their phone (they also double-duty as stands, for taking photos).
