Hi,
The only thing that isn't obviously some sort of
pun on an aspect of
Unix is a canister labeled Oregano in the foreground of the picture.
https://groups.google.com/d/msg/comp.unix.wizards/qkiqSJWgEPE/E5BwZYMvXwAJ
The oregano is reputedly referring to an incident in which one of
the original folks involved with BSD was hassled for coming across
the Canadian/U.S. border with a bag of what was assumed to be an
illegal substance, and turned out to be oregano.
--
Cheers, Ralph.
https://plus.google.com/+RalphCorderoy