I’m actually planning to make my own DIY version of scratch, but that it’ll be designed to be spring loaded like the actual thing.
So far I figured out that a dry erase marker that has similar shape to the center piece of the mechanism can fit through both a thinner part of toilet paper holder and its spring. And I’ve noticed that the metal mechanisms have L-shaped holes, and that’s my idea is to put a hole like on the marker. I’ll post the finished product when it’s done.
I might have to cut the coil shorter and place the L hole either higher or lower depending on how big I’ll make the cylinder.