"non plus" doesn't work. its meaning as "either" is only valid in the sense of "i don't like pasta either", not in the sense of "either is fine".
"soit" has kind of the same problem in that it only means either in the sense of "either we go to the park or the restaurant"
in terms of accents:
CLUBS - TRÈFLES
CIRCLE/NOUGHT/RING - ZÉRO
and that's it, although i should note that there is no way to type these (except alt codes) on a french keyboard as they're capital letters. it might help with search though, so here they are. i've updated my main post to reflect that.