When I was a young child me and my sister (similar in age) would bathe together — common when I was growing up and for our age group — we would paint pictures on each other’s backs with the soapy water and would guess what each of us were creating. While this is not a direct form of ESP, it is a good training ground in getting in touch with senses that do “other” things. For example, it’s unusual to “feel” pictures but as we did it for a fun game to pass the time of bathing it was virtually a training ground for future direct ESP experiences.