Crello 
Offers free image templates   

https://crello.com/templates/keyword-coronavirus/ 

Icon Finder
Offers several sets of icons illustrating coronavirus awareness 

https://www.iconfinder.com/p/coronavirus-awareness-icons 

Stock Photo Secrets
Offers a selection of coronavirus related images – registration required.  Also offers 

https://shop.stockphotosecrets.com/freeimages-coronahelp.html 

Also offers other related image resources

https://www.stockphotosecrets.com/free-photos/free-coronavirus-resources.html#last-but-not-least-our-two-centsLoom  

Loom
Screencapture and video tool Loom has cut its prices, removing recording limits on some of its plans, and extending its services to educational institutions to free “for ever”. It offers a free service anyway!

https://www.loom.com/blog/coronavirus-response 

Pexels 
Free stock photo and video site Pexels is offering free Zoom backgrounds, to brighten up the background as you spend much of your day in video calls. 

https://www.pexels.com/search/zoom%20backgrounds/