Skip, your post, followed by the copied explanation of the meanings behind the "3"-focused BDSM emblem lead me to wonder if the feather yin-yang design would be more complete in a "2"/yin-yang style variation. I really agree with the way you've described tickling, I myself find it in this two-fold context.
Maybe a "lock and key" type of thing? Like a circle with two halves, that only fit eachother, but instead of the curvey line of the yin yang, maybe an indent in one half of the circle in the shape of a key, and an extension off the other half in the same shape.
The two halves could symbolize the various opposites/two-sidedness of our fetish, while also expressing the fact that, like Libertine said about BDSM, tickling can't be done alone. You can't have lees without lers and vice versa. It also could symbolize the potential eroticism of tickling if you look at the key as a phallic symbol.
The lock & key could also symbolize the bondage aspect the fetish, but doesn't have to for those who don't prefer it.
I also think that, for the folks who like the idea of the TK symbol somewhat mimicking the BDSM symbol, this idea, or some variation thereof, could satisfy them as well.
I actually really like this idea the more I think of it, because I feel like it has alot of possible explanations/interpretations without symbolizing something that not everyone in the TK community feels a connection with (like the feather, or a more obvious variation the BDSM symbol). The symbolism can be really powerful without locking
🙂facepalm: no pun intended, honest) someone into a symbol to which they don't feel connected.
It also allows for alot of room to personalize it. If someone *is* into tickling with feathers, they can, perhaps, make the teeth of the key look like feathers. The colors and feel of the key and keyhole can be altered to fit just about anything. It can be made to look goth or girly...the colors can be changed...it has a ton of possibility.