I've been really enjoying everybody's submissions and decided to design a fun, colorful knob too.
Design Name: The Jelly Knob
Inspiration: A Jelly Fruit Cake. I was eating one the other day and decided that it'll be fun to see one used as a knob too.
Fun meets Function: Slot cuts were made on the outer circumference of the knob to offer the end-user a form of grip, while the indent on the top of the knob was inserted to offer a "cupping" function to the knob, should the knob ever be used to rotate using one finger. Credits goes to @keystothelaunch above for their tear-drop idea, which led to this knob's inspiration.
Other than that, I'm really excited for this board to come into fruition!