My printer is decommissioned at the moment so my focus is getting it functional again, but once it is I plan on;
Printing a better mount for my wort chiller. It is currently bolted onto the side of my brewing stand, but I am afraid in its current state it will eventually rip through the stand's cheap sheetmetal.
I also want to print a cold air distributor for the tap tower on my kegerator. Currently a small fan blows air in the fridge part up the tower through a 1 inch diameter clear vinyl tube. The cold air makes the vinyl very inflexible and it tends to blow the air onto the side wall of the tower, freezing that spot and leaving the rest to heat up.
How has your 3d printer proved useful for your brewing and drinking activities?