The community rewards for Myst25 included 3d STL models (https://myst.com/community-rewards/).
I looked into printing the marker-switch model on Shapeways, but it comes out at like $300 for a steel print, because it's a solid block. (You pay by the gram, it turns out.)
My 3D skills are pathetic but I managed to edit the model file, removed a lot of superfluous internal geometry, and gave it a hollow base:
https://www.thingiverse.com/thing:2994365
A steel print of this model, scaled to 8 cm height, is around $100 on Shapeways. Still an expensive toy, but much more reasonable.
My proof won't arrive for a couple of weeks, but I wanted to post the link so that people could make their own in time for Mysterium.