Some ideas that I had, if any sound interesting to you.
See no evil, hear no evil, speak no evil hands
Rock, paper, scissors hands
Fingers making the shape of an L on your forehead (it's an American way to call someone a loser, according to tv shows from a while back)
Sillycat as both a base and the eyes (I think it's just white neocat_floof but the eyes are surprisingly not the ones popularized in the boykisser neomoji)
Rolling eyes and the slanted mouth to go with it
Mouth with spaghetti noodle or mouse tail dangling from it
I remember you saying that you liked boop too much
The woem mouth
Double guns (I actually think one left and one right makes more sense but both in the same direction is more consistent with other neomoji)