A bit later (1991), but the first webcam (pre-web) was for similar purposes:
You reminded me of http://www.fishcam.com/. I’m for sure a victim of Golden Age thinking
I drank many Cokes from that machine!
The most recent equivalent I was aware of seems to be quite stale: http://www.cs.cmu.edu/~coke/
Hey, current CMU people – what’s up with the Coke machine?