For the first show and tell I attempted to make a silicon tentacle from the tutorial on Instructables.
I bought similar materials seen here,
The idea was to use the pens as molds for the silicon tubes, and then to attach all three together and inflate two at once to create a curling motion. Unfortunately the silicon I purchased was different than we used in class and did not set as I expected. I read the silicon would set in 24 hours, but after 72 the mold was still fluid. I’m not sure if I didn’t use enough activator or if this silicon requires deaeration, which I do not have the tools to do.
For the next show and tell I would like to make a muscle that can extend.