I found a compact universal travel adapter set this afternoon around 4pm near the Port Authority Bus Terminal, at 8th Ave and 42nd Street. It's in a matte black plastic case with a bright red silicone cap on one outlet and a small label etched 'TravelMate 3.0' on the back. The plug supports US/EU/UK/AU and there are USB-C and USB-A ports; it powered up fine when I tested it with my charger. The adapter shows a few micro-scratches from being carried in a bag, but it's in solid working condition. If this is yours, I'm happy to help you get it back.
Approximate area where the item was last seen