Plenty of people are using UVC light to sanitize their phone, toothbrush, and other everyday items. The Zuvy UVC Sanitizer Bag is also worth a look. It is a handy little bag that uses 4 260-285nm light nodes to deliver 99.99% sanitization. It also has aluminum foil inside to reflect the light to cover every part of your mask, phone, key, watch, and credit card.
This is pretty easy to use. Simply connect it to a USB power source and press the button to stop disinfecting your things. You can find out more about it here.