On Thu, Dec 4, 2014 at 10:31 AM, Jeff Garrison <[email protected]>
wrote:

> Thanks to all for these great ideas! Definitely going to get at least one
> if not more a try :)
>

I am sure that the following idea will be thought of as no fun and 19th
century, but...

A large water vessel sealed except for a tube from its bottom placed in the
tray containing the water to be kept filled, like a chicken water feeder.
The large vessel might be visible for monitoring, or large enough to last
the holiday season.  No batteries to replace.

-Denis
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