I recently got a glass bed for my Wanhao Duplicator i3 Plus which is the same machine as the Monoprice Maker Select Plus and the Cacoon Create. Because of this, I needed to start applying glue to the bed to get better adhesion, and I wanted a holder for my glue stick. I'm sure there are plenty of good holders on this site, but I wanted to make my own.
This model was designed for the Wanhao Duplicator i3 plus but may also work with the regular Duplicator i3 or other printers, and it was designed to hold a standard larger All Purpose Elmer's glue stick.
You can mount the holder using the same screws that originally held the upper left or upper right corner of the frame together. You may have to angle the screws in a little to avoid the hexagonal holder section but they will natural straighten out.