Looking for computer tech to cover for me while I’m on vacation

Hi there, I do some consulting on top of of my full time job. I perform break/fix, small-network type service. I have a handful of regular clients, mostly small businesses.
Almost all of them are located in Manhattan, a few in Northern NJ. Seems that every time I go on vacation something comes up.
(August seems to be unlucky; a virus outbreak one year, the blackout the next year.)
I’ve been gotten away with it in the past, but I’d like to have some backup this time in case something comes up. Anyone interested?