Ultimately, the model from AndrewFromOz was the simplest and easiest to print one hand holder for the Kindle. I resized his model to fit the newest generation of Paperwhite (11th generation, 2021). The piece for the fingers is identical to his.
Printer Brand:
Creality
Printer:
Ender-3 v2
Rafts:
No
Supports:
No
Resolution:
.2mm
Infill:
15%