some years ago, our premises was advised of a water mains "outage" over one weekend, and the workshop staff were advised to make provision; which they did, but the only water container they could find that was (considered) big enough was an old-fashioned sweetie jar.
in the end the water was off for so short a period that they didn't need the water from the jar. so there sate a sweetie jar full of water.
on day 4, a fish appeared in it. nobody ever owned up, but the workshop office then had a pet, which lived for a good 10 years.