Also, a propos of the one neck dilemma-- here is a January post from the wonderful @Ladybaga, who wistfully wondered if there couldn't be a Hydra-Octopus H monster to allow for nine necks and eight arms!
Though on the upside, with eight arms I could probably manage a friendship knot, or two, in the mix…On, but the coordination dilemma…
amusing little addition: my autocorrect just tried to change “friendship knot” to “fiendish knot”.