I spontaneously decided to pick up a pizza one night and found myself with 20 minutes to kill and nothing to paint with. Curses! So I made good use of that time thinking through initial designs for this.
The plan was to create a unified thing that would hold paint, water, brush, something to sketch on, and a bit of paper towel to wipe the brush. It had to be 100% self contained – not that it’s bad to put a brush in a pocket, but in this case I wanted something that was entire and complete by itself, with no extra parts to forget. The palette could be limited but had to be adequate for general painting. Ideally all the parts would remain attached, so there’s nothing to drop while using it. Finally, I wanted it to fit in a back pocket, so it would be easy to grab-n-go without having to think about it.