The power of "What was I just dreaming?"
LaBerge recommends asking yourself "what was I just dreaming about?" when you wake with no dreams immediately on your mind. I've done this consistently over the months of LD practice when reaching for recall upon waking with no dreams already in memory, and it almost always works. I did it again this morning, and went from zero recall to about 10 scenes eventually, one scene after the other coming flooding in.
I started wondering about how this works. It could be that by asking this question consistently right before reaching for dream recall sets up a trigger that your mind recognises over time to provide the memories when you ask this question. An interesting possibility. I highly recommend this technique for aiding dream recall.