Wiener Valve Stem Caps
thingiverse
I stumbled upon someone creating something similar in the 3D Printing group on Facebook, but their post got deleted by the admins before anyone could reveal where they sourced the caps. I designed these items myself using Fusion, featuring caps, cap seals, and a container to store the standard caps until the prank victim discovers what happened to the regular caps and needs to retrieve them.
Download Model from thingiverse
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