Since the Magic Keyboard made for iPad does not have anything to secure the iPencil, I printed a case that slides on top and keeps the iPencil from falling off. 

Fun Add-On: Part of the Magic Keyboard case's back flap is magnetic, so I superglued 2 metal strips to the print to hold it just enough that I would not lose it.

Sized for iPad Air (5th gen) and attached Magic Keyboard case

Note: Design on print was caused by the filament and will not appear with most filaments. If you want to copy the look, I used Jesse Premium PLA, green ice colored.