Dear Mary: How do I greet friends without hugs or handshakes?

Q. Now we are instructed to mingle again, I’m sure I’m not alone in being surprised to find an awkwardness on meeting or departing from friends and relations. The lack of handshake or hug has us all twitching. I struggle to find the right socially distanced replacement; the ‘namaste’ praying hands gesture seems rather mutton dressed as lamb for those of us who are the wrong generation for a gap year experience.