Hummingbird feeder ant trap / ant moat -- Keep ants out of you hummingbird feeders!

I decided to refurbish a few of my hummingbird feeders to give to my mother on Mother's Day as she is an amateur ornithologist when not saving lives, and I bought a printer to make useful things. Plus, one can never have too many feeders!

The first step in the process---well, the second step after cleaning the feeders that survived the winter---was to make an ant trap/moat to keep the ants away. Drawing inspiration from the many DIY moats one may find when googling the problem, I "designed"