In anticipation of receiving an iPad for notetaking in college, I created my own iPad stand that can work with all types of mobile devices for viewing purposes. This stand is foldable, allowing it to be discretely carried in a backpack or bag. When unfolded, it has a viewing angle of 15 degrees from the vertical, allowing the device to stand nearly perpendicularly. This has been successfully tested to work with the iPhone 14/15 and 11-inch iPads (as these were readily available), although it should also work with all other iPhone and iPad models as well.
Bottom Piece
Assembled, Unfolded Position
Center Body Piece
Connecting Shaft (2)
Must be Glued to Center Body Piece
iPad Holding Piece
Assembled, Folded Position
Video of Folding Mechanics
Note that a professionally printed model would be rigid in the Folded Position
Isometric View-Empty
Side View-Empty
iPad in Horizontal Orientation
iPad in Vertical Orientation