This Jeff Koons drawing tool for teenagers to use the Ultimaker pen and pencil to make small lines was my solution to Week 4's Design Engine challenge. When the Gorilla holds both the pen and pencil, the points of both drawing "instruments" are close together forcing the artist using the tool to draw small lines. Challenge card #1 - "Back to the drawing board" Design a tool that can be used for drawing or sketching. Parameter card #1 - Small Parameter card #2 - Teenager Expansion set parameter card #3 - Jeff Koons