My girls gave my husband a gag gift of a USB pet rock some years ago, for his office. He recently found it with a bunch of things he brought home when he retired, and it's time to re-gift the rock.
If anyone here wants it, they can have it for postage (it will fit in a small usps priority mail box). They still sell them brand-new, for double or triple the postage price. We have the original box and instruction manual.
Apparently, the people most confused by it were upper level managers and IT.