I use my ES121 battery-powered screwdriver all the time. So I needed a simple stand to make it ultra-accessible along with the eight most common bits I use. Now my favorite tool is sitting right there on my desktop ready to go.
And for the Bits, I really wanted the bits to be easy to select and grab. I've got big fingers and I'm so over having 50-some-odd bits crammed together in an array in all your standard cases that make it hard to get a single bit pulled out. So I made this single row of bits so that each one couldn't be easier to grasp.
And why not make it interesting to look at? I tried to make it attractive so that other people would notice it on my desk too.
This will work the same for the ES120.