When I was younger, I touched the moon once!
Well, a piece of rock that had been part of the moon, at least. It was mounted in the National Air and Space Museum in Washington, DC, and people could file past it and touch it.
(It wouldn’t surprise me if nowadays it’s completely behind glass, if it’s even still on display at all, but back then, ca. 1992, anyone could touch it.)
It was, from memory, irregularly shaped, about 2 cm wide by 10 cm long (¾" by 4" or so).