Question, does your husband write music or just play? I made a gift for my father-in-law (who was a composer) once and it made him cry. We didn't have a lot of money, so I bought a bunch of blank sheet music and learned calligraphy (taught myself online, it wasn't hard), and I hand wrote on the top of the sheets: "Lyrics by (blank)", and "Music by (blank)" , etc. It meant so much to him that I took the time to think of something special for him, and the time it took for me to write all of those out.
Another thought would be maybe taking him to a concert of a musician he admires, or plan a road trip up to somewhere like Nashville, TN (music city). I took my daughter when she was 3-4weeks old with us to TN...just strapped a infant carrier on me everywhere and away we went.
I don't know, an adventure in the park or family picnic at a music festival might be a thought too.
Just suggestions...
