I faithfully use the nose pinch RC because I am not shy about making
sure I do it correctly, I actually hope that someone will notice and ask me about it so I have the chance to share the wonder that is LDing
An RC that has worked several times for me that hasn't been mentioned: Lift one leg in the air, and without putting it back down, lift the other. This is simple to do irl if you just lift your foot by an inch or so without being too apparent.
And a note to chris, I have used my glasses as a stability technique in dreams very successfully. When the dream gets blurry and I am about to wake up, I take off my glasses and the world jumps back into focus

. The idea is that the glasses are dirty or steamy and you can see clearly once you remove them.