Etch a sketch lookalike ipad holder.

pinshape

Use the design for a wall-mounted holder, specifically made for iPad models 3-4. Secure the knobs using 608zz bearings for smooth operation, my son appreciates how they spin freely. The part was printed with supports and achieved a high level of detail at 0.01mm resolution; however, 0.02mm should be sufficient as it's not crucially detailed, considering the knobs have grips that benefit from finer details.