Dimensions based on the Sennheiser MKE2-EW. No idea if it works with others. Conceales a lav mic and minimizes noise from clothes.
I used a 0.8mm thick paperclip, bent it into the correct shape (& cut the "legs" at 5-6mm) and just press-fit it into place. Don't push it as far in as in the picture, maybe 1mm higher up. You can heat up the paperclip with a lighter to melt the plastic but I found this to be difficult to succeed. The holes are designed 1.1mm and a 0.8mm paperclip had a good press-fit. No idea if this will work with TPU though. Maybe just make the holes smaller and let the TPU bend out?
The author marked this model as their own original creation.