Spectacle cases (Letchworth SG6)

Assorted empty spectacle cases which will go to landfill unless anyone can find a use for them. Rarely used. Now left are three blue ones and one black case.
Google suggests some ideas:
"Storage: Use them to store items like pencils, crayons, markers, flash drives, paper clips, safety pins, or rubber bands
First aid kit: Fill a case with bandages and ointment for a basic first-aid kit for your car
Manicure kit: Use it as a manicure kit
Clutch purse: Turn it into a clutch purse
Sewing kit: Use it to store or organise sewing kit items"