Updates/Configurable version of this stand can be found at Flexable & Configurable Bookmark Stand by Jeff Smith - MakerWorld

Wanted a stand to hold bookmarks as I've been making a few of them lately. The slots are sized for the bookmarks I make and are 1.25mm deep (15 degree angle as shown in the second picture) and 22mm wide. If you have bookmarks from others, they will likely fit, but might wiggle a little side to side. I've included the .STEP file in this upload so those who are capable and so inclined can change it to fit their requirements.