A few years ago I got into making resin dice and I have been keeping track of the amounts of resin, mica powder, and alcohol ink I have been using in a small journal like notebook. As more and more ideas come from items I see or requests from friends I wanted a way to quickly sketch out my ideas and add color without having to draw the dice.I found a free png file of some dnd dice, converted it to an svg file, and then made a bunch of edits in thinkercad. The result was this dice stencil that has quite a few people asking for it as I have shared pictures of my journal.
Works great with a mechanical pencil, but its a bit small for a non sharpened wooden one. should also work with a fine tip pen.