Awesome idea for those bride and grooms out there that love music and are looking for a unique save the date idea. Steve Clayton does custom guitar picks. A package of 100 ranges from $24 for text only to $39 and up for ones with graphics. All you have to do is go to the site and start designing your guitar pick from the color of the text, one of their font, and the image you choose. Take a look at Vera's from My $10K Wedding save the dates. Notice the custom guitar pick in orange below? These could also be awesome favors for those music lovers out there.
Invite design by: Vanessa Wieren at Lollipop Events and Design
I took a stab at playing with their Custom Pick tool, and it is super easy to use. You can upload your own images, or grab one from their image library like I did below if you want to test it out. You can move around each box you create to get the exact positioning you are looking for.