UNO!
This morning Liam crawled into bed with me to tell me about the 8 rounds of Uno the boys had already played together. Yesterday there were no fewer than four Uno sessions - probably more that I didn't know about - each of multiple games. It can be played just the two boys or the whole family, in person or over a screen with friends and family we can't currently visit.
Nathan came up with the idea to give Liam a set of Uno cards for Christmas this past Christmas. We chose a set of cards in a tin so the box would survive lots of use. We had no idea that six months later it would be a key ingredient in surviving social distancing, traveling around the house daily.
Best Christmas Present Ever.