My brother and I have both upgraded old Macintosh computers with Macquaria, a fishtank/screensaver program that fills the screen with colorful living icons in an underwater theme.  My Mac SE runs Fish&Chips v. 3.0  Here are the plans if you want to build your own.

This is my chinchilla, Peppercorn [FN1]  The chinchilla is a South American mammal with very soft fur.  I tell the uninitiated that he looks like a cross between a squirrel and a rabbit.  Chinchilla owners seem to be a very high tech bunch, so Peppercorn has many on-line friends. 

 
See the new chinchilla-cam!

I had a beehive in my backyard for about ten years, and sold honey with this label:  I took up beekeeping to explore the social life and dance-language communication of these insects. Fifty to 100 pounds of honey a year wasn't bad either. Unfortunately, I lost the hive to the combined onslaught of varroa mite and a bear a few years ago.