Why don't you make a small bag (ITH treat bag) with the guitar design for his picks and capo. Make a towel holder the shape of a guitar with the small towel attached to use to wipe down his guitars.
these are links to other posts looking for musical notes and alphas
1. applique note search
2. musical notes
3 & 4. musical alphabets
Thank you, sewmom you always are so organised - just how do you do this magic?
1. guitar with background design
2. set of guitars look for June 8th 2010
3. free rock star guitar
4. 3 guitars May 17, 2009
5. scroll down for freebie