Ekakshara Ganapati is one among the 32 forms of Ganesha. In this form, Ganesha symoblises the primordial sound ‘OM.’ Ekakshara is a meditative form of Ganesha and the belief is that this form helps in controlling the sense and mind. Ekakshara Ganapati Mantra is
Raktorakangangkasha kusumayutah tundialah chandramoulih
Nethraih yuktistribhih vamanakaracharano beejapundadhanah
Hastagra kalusa pashankasharada varado Nagavaktrohi bhoosho
Devaha padamasano no havatu natsuro bhootayae vighnarajaha!!
This form has four hands and holds noose, goad, modak (sweet ball) and a broken tusk. A crescent moon is shown on his hair. The ornaments around the stomach are in the form of snakes.
In some Puranas, it is stated that this form should be depicted as riding on mouse, the Vahana of Ganesha.
Ekakshara Ganapati helps in meditation. Constant prayers help to keep the wandering mind in check.