Introducing an element of randomness into reflection can help stimulate creativity and facilitate the exploration of less obvious connections or tapping into non-conscious processes.
You could introduce randomisation into:
journaling by putting narrative components on separate cards and shuffling them (like found poetry)
concept mapping by moving concept boxes around next to other boxes and looking for unnoticed associations
metaphor analysis by using a random word/idea generator tool (see below) and attempting to use it as a metaphor for the reflection topic or incorporate it into your narrative somehow
Randomness generators