This banana stand is a modified version of excapealex's model, which itself was a remix of BrewerGlyph's model.
Model stands roughly an inch taller
Stem thinned to fit more easily between banana stems
Male side of connector slightly shrunk, female side of connector slightly enlarged (I didn't need as tight of a fit as the original had since I was planning to acetone-weld both sides together anyway.)
QIDI TECHNOLOGY 3DP-QDA16-01
0.4, though a higher resolution would give a better finish
If you want the support side of the stem to print cleanly, you may want to print at a higher resolution than .4.