Professor, I have completed the design and prototype of the pen holder as requested. The pen holder is made of wood and has space for storing up to 5 pens. It has been designed keeping ergonomics in mind so that the user can easily access any pen without much effort. The prototype has been tested for durability and functionality. Based on the testing, minor design changes may be required which I will incorporate in the final product. Please let me know if you need any other details or have any other feedback. I look forward to your review of the prototype.
