Way back when the forum that @the_twig and myself moderated still existed, we had a whole bunch of signatures available for people to use.
These are those signatures.
They're rather tiny, but I feel that it's a nice thing. Keeps things from getting cluttered.
I'm not removing the ones labelled with "KissCommunity" for the sake of being a completionist, so take a gander at those as well. Hell there may even be a few custom ones for particular members.