Touch things, I had a LD recently and it started to dim, I knew I was losing lucidity, there was a tree stump near me so I went to it and felt it, it was like real life, there was a nail hammered into it that was bent, I could feel the rust on it, the point is, I kept the dream going longer. I also find it cool to touch and feels things in dreams anyhow, it fascinates me... Good luck