"Kṛṣṇa carried a small stick in His hand, His clothing was a little longer, and He had a knot around His waist, resembling the hood of a snake. In that dress He used to take care of the calves near the house, and sometimes He played with cowherd boys of about the same age. He had a slender flute and a buffalo horn bugle, and sometimes He played on a flute made from the leaves of trees." NOD 43
http://prabhupadabooks.com/nod/43?d=1
