Searched for a simple but secure headrest tablet holder to keep children entertained. None came up so I made one. Doesn't use much material and consist of just two parts. Can be used behind front seats or on the front side of back seats if using child seat. Works as table holder also. Attach first to seat and slide the tablet in.

Pretty much everything is adjustable with parameters in customization and in Fusion.

Parameters:

• Headrest rod diameter (headrestroddiameter)
• Length from middle of the rod to back of the tablet (headrestroddepth)
• Height of the tablet (tabletheight)
• Thickness of the tablet (tabletdepth)
• Tilt of the holder if needed (tilt)
• Length of the hook holding the tablet (tablethooklength)
• Thickness of the holder (bodythickness)
• Width of the holder (bodywidth)

• Offset from center where headrest hooks attach to the tablet holding part (hookoffcenter)

   

Print profile is for iPad mini gen 5 and Citroen Berlingo K9 but better to make your own from .f3d.

I use 3+ walls depending on the tablet, if kept in car in sunny conditions would go with PETG at least. Depending on material choice might need mouse ears or small brim. The hook needs tree supports on two flat parts, see picture.