Sleeping mats have gone out of fashion in the past few years because of the boom in number of places to stay. Mats were no longer needed. Now, with albergue capacity halved and many albergues not opening at all, there are likely to be lots more "opportunities" to channel your inner cowboy and sleep rough. Thus the sleeping mat suggestion.
You may need gloves, especially when shopping, handling money and cards, or just moving around with door handles, pack zippers, etc. or on transport... places where no soap and water are available. Gloves, masks, sanitizer, and spray cleaners are available everywhere. Don't freak out if and when someone takes your temperature with a touchless thermometer. My dentist does this, my pharmacist does this, my monastery chapel does this!
Smaller, family-run albergues and cafes still prefer cash. They handle it with gloves on. You still may have trouble paying with a card some places, so please carry some cash. The few donativos that are open don't have credit card machines.
People who insist on coming to the camino and walking this year really must have adequate insurance coverage, for your health and for the trip. Things may cost more this year, be prepared. The virus is still active. If an outbreak is suspected, you will be expected to get off the Camino and get yourself home immediately. If an outbreak happens where you are, you could be quarantined.
Be ready for anything.