Ribbon is not the problem. Just don't use organdy. Use darker colors of grosgrain. Hemp is too thin. Raffia could be fine, just don't over-do it.
Trim ribbon ends at an angle, not with arrows (if you know what I mean) and keep them a little shorter than you would with a girly one.
Also, metal embellishments are always fun. Maybe hang a music charm or two from hemp or linen thread at the clip to add some masculinity to the be-ribboned area.
Have fun! Sounds like a GREAT gift.
Carol O.