After most bird feeders are supplying seeds and the few ones I found that claim to provide water actually drain a bottle in mere seconds, I decided to do my own, ugly quick hack of a water feeder for birds. Takes std PET bottles and replenishes the cup with water as the birds or sun deplete it.

Printing:

You'll obviously want a UV-resistant filament like PETG to print this. Other parameters are pretty much up to you. It takes about 50g of filament at 0.3mm layer height, 20% infill.