I use kobo as an ebook reader, with its static ink screen long readings does not do any harm on the eyes. Especially for the tasks like vocabulary check, I needed a stand for it. Searched for the market, there were some products but I went with “why not 3d print it?”.
I came up with some designs, I wanted it to be simple, multi-purpose and easy to carry. And here it is. 2 pieces, non-slip red dots on the bottom, can be used with any pen.