I recently designed this acoustic guitar patterned hat. A friend suggested the pattern and sent me a picture of his friend's guitar and I took it from there, paying special attention to the colors and details so that the finished work would most resemble that specific guitar.
I really wanted to have a guitar while posing for the pictures, but unfortunately the music store we went to was closed, so the closest I could get was the guitar on Chuck Berry's statue on the Delmar Loop (in St. Louis).
The pattern can be found here on Ravelry, here on Craftsy, or purchased directly here.
Photo credit: Pablo Tsukayama