There are always "books" ...
In the professional wargame category I have plenty of books to skim, read and re-read (see below, Sabin's [Lost Battles and Simulating War], GLB [Successful Professional Wargames], Dunnigan, Perla [The Art of Wargaming] are old classics long read, but I have plenty of other stuff with interesting idea in abundance, mainly it seems from the History of Wargaming Project):
Then there are the books from the historical category and there are plenty of them on the bookshelves (see below, the Pacific War is my current theme which ties in with the 1/3000 Navwar models, so this is a small section of my dusty books):
Or a general scientific interest (see below, Blink if a good lite-read):
Slightly heavier but packed full of thought provoking ideas (see below, I particularly like Newton's "apple" on the front cover):
And let's not forget the rules which I have bought and should have really read by now. This is a large category. Carrier and Tokyo Express are specifically solitaire games so ideal for the current circumstances(see blow, XTR Victory at Midway is a personal favourite of mine that I am playing via email to an independent umpire against an unseen third party):
Hopefully chances are by the time you read "one or more" book and played "one or more" games then the Corona Virus thing will have all blown over! Famous last words. Anything not done by the end of the lock-down needs seriously to be put on the "never happening" project shelf!