Post Covid19, there is a high possibility that public places will change a lot of door knobs and door handles to copper. This is mainly from the reason that the virus does not survive on copper (Not sure how this has been proven to be a fact), but it seems the recommendation is on the rise.
So if you are looking for something to do after Covid19 and have the skills in this area (or not), this is a possibility you can look into. Its not so much the door knobs and door handles, its just that a lot of changes will be implemented to everyday life and institutions and companies will prioritize. My feeling is that this will be one of the areas money will be spent (amongst many other modifications).
Just an idea. Let us have your thoughts! It might just help someone else have that spark!