After printing the calliper holder I was inspired to make a holder for my tweezers and right angle. It is designed to fit my Thing-O-Matic by simply hanging over the edge of the top with a grip on the inside. Minor modification should allow it to work with a cupcake as well.
My guess is that most of you do not have the same constellation of right angle and 4 tweezers, like I do, but I hope that the OpenSCAD file will help you create your own over the edge tool holder.
Just render, print, and then cut away the support material in the grip.
Cutting the support material was more difficult than I had hoped, I had tried thinner supports, only to have the GCode leave them out. :( So you may want to experiment with the supports, and your 3D printer settings.