A 3D printed laptop drawer!
I designed and 3D printed this container! It is the same size and shape as the CD drive on old Thinkpad computers, and it fits right in! (old Thinkpads have removable CD drives, there's a lever on the underside that unlocks it, just like the removable battery) Besides adding storage, this also makes my laptop lighter! I didn't need the CD drive. If I ever need it again, I can just slide it in!