Moveable Laptop Tray

I asked a couple my friends what challenges we all struggled with when we had to go online and the common problem was that half of us didn't have desks at home. So the purpose of the Moveable Laptop Tray is so you can move around and still have everything with you. There are spots along the tray for 2x2 and 3x3 Sticky notes, USBs, calculators, and writing utensils. Therefore you don't have to have many things scattered around while working on school work. In addition, the tray is adjustable to move to a 10 Degree or a 25 Degree angle. Also this does need to be built so pins, part numbered 98404A135 and 90985A409, are used to keep everything together.

What Issues did I come up against?
Figuring out the angle adjustments and where to place the pin holes

If I were to redesign this again, what would I change?
I would most likely tray to limit as much material as possible to make it affordable.

How would 3D printing help you strengthen your design?
It would help me figure out