Add your name to this page holder using the Customizer app.
There are a lot of book page holders out there but none will fit my giant thumbs, so I designed my own. Not sure anyone else would have a use for it but I thought I'd share anyway. I also wanted to try making something customizable. You can put your own text on the flat part to the left and right of the abnormally large thumb hole. I'd like to put text on the curved top part, but, for now, there's a place for text on just the flat side.
I've added an additional parameter to adjust the text height above the surface (extrude height). I used a value of 0 to print the "Thingy" text in the photo and I think it might look better with 0.5 or 1.0 depending on the quality of the print.
I scaled this in the 3D printer software a little to make sure the thumb hole would accommodate my giant thumb.
I used Adobe Illustrator to hand draw the shape I wanted so it would fit my freakishly large thumb, then exported it as a vector graphic. I imported that to Blender, scaled it and extruded it. I converted the STL file to OpenSCAD using this app (https://www.thingiverse.com/thing:62666) and then added placeholders for text in the final OpenSCAD file.