Splashing through puddles stands for carefree joy and permission to get a little messy. Dream books link it to the playful side of you that rules have quieted.
When this appeared in your dream, what were you feeling?
My Cosmic Code has a private dream journal. Write a dream down and the app picks out the symbols in it, shows what dream books say about them and, over time, which words recur across your entries. The journal is stored on your device only.