When you are feeding bees sugar water, you need a way to hold the jar up. That way the bees can get to the holes underneath. There are some designs for this sort of thing around, but my jars were too big or too small. This is customizable so you can use any size jar you have handy.
Amazon basics PETG
This should be a really simple print, no supports needed, no overhangs. You should go with PETG or something food safe.