Many times the floats are named after ancient gods or godesses.

Chons

(Khons)

The third member (with his parents Amen and Mut) of the great triad of Thebes. Khons was the god of the moon. The best-known story about him tells of him playing the ancient game senet ("passage") against Thoth, and wagering a portion of his light. Thoth won, and because of losing some of his light, Khons cannot show his whole glory for the entire month, but must wax and wane. The main temple in the enclosure at Karnak is dedicated to him.

http://socsci.colorado.edu/LAB/GODS/chons.html