There was a small article in my local paper about a beer tray collection. I am interested in old pub stuff so I looked up his website - it is one hell of a collection! It also covers ash trays, match strikers etc..
He even has a wants list on there - you may have one he needs if you are lucky. I have to say I enjoyed looking at some of his collection.
It may pass an hour for you during this lockdown!
https://brewerytrays.co.uk/cms/index.php/