What is a simple devotional practice recommended by Sai Baba for his followers?

According to Chapter 22, Sai Baba, referred to as Mother Sai, shows an easy path to devotion for His followers. He advises, "Becoming egoless, bow your head to all beings. Do meditation on a single big toe; It is an easy means of devotion." This method emphasizes humility and surrender as a straightforward means of spiritual practice. The text suggests that this teaching provides an accessible way for devotees to progress on their spiritual journey by overcoming the ego and focusing their minds through a simple meditative act, as shown by Baba himself.