My interest in the material known as latex sadly came from fiction. To be more specific, it came from Beta Latex, a material from the defunct Chainsman Institute that could solidify and become restraints. I especially liked that they could instantly create a skin-tight cocoon that could only be cut by lasers.
...My second exposure to latex probably came from Fast Fist's Supergrrl story in the form of Vlatex/Plastiskin.
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The point is, latex is an interesting material to write about not just because it is smooth and shiny but because one could invent a fictional material with those main properties. So what fictional latex have you come upon in your travels, and what kind of functions does your ultimate latex provide?
...Oh, and you could also include rubber restraints you wish in real life. For example, the Pneumatic Suits, which are vacuum-sealed suits that makes the user look armless.