For a keyboard, I use a modified cashew nut which is linked to an Arduino and USB controller. Chewing on the nut creates input. Input (in the form of a$, b$ and maybe even c$) is influenced by alcohol. Alcohol is influenced by the offers Morrison's happens to have on that week. Therefore, my primary PC HID is a woman with a trolley full of cider who isn't looking where she is going.
My mouse is Frankinstine's monster's head and neck with the bolts wired to a PS/2 port. Because Lenin's head was behind too much bulletproof glass.
Hic.