I visited the Monastery of St. Gerasimos (Deir Hajla) a few kilometers east of Jericho today. It contained a two interesting images of the Trinity.
The first is from the dome over the upper church, showing an anthropomorphic Father enthroned in Heaven, with the Spirit as a dove, and the Son as an infant on the Father's lap.
The second shows an anthropomorphic Father on the right, the Son on the left, and the Spirit as a dove in the middle with a halo. The Father has a triangular halo.