…useful I thought, but at $27 - not that useful. So I decided to draw this by hand, convert it to digital schematic and use my non existent 3D printer with different types of filaments to make one.
I have marks on the wall where I have sprayed Hoppes Foaming Cleaner down the bore with a little to much pressure I think my wife would approve of your design as long as it was recycled and not just another container on the desk.