Pen/Highlighter Case

This is a model that can be used for cheating and also just to hold a pen cartridge. If you want to use it to cheat, you might want to use a highlighter looking color. I has the space to fit a friction ball pen cartridge and the eraser thing has a slot at the bottom. You can sell this is you want. It is my first ever 3D model made all by myself. Please tell me if I can approve anything.