Oh yeah. Im not the first one to do this, but here is my way. Below is Me pondering existence.
Step 1: Quick Walkthrough
Sharpie More (optional)
Go play guitar with your brand new pick
Step 2: Materials!!!
Something to put picks in
Scissors or if you are skilled, chainsaw
Step 3: Make Pattern!
Sharpie the edge of the guitar pick onto the card. It should come out like the image below.
Step 4: CUT!
Cut out the rough shape of the guitar pick. It should come out like below.
Step 5: FILE!
File/sand it down to almost exactly the shape of the guitar pick. Below was TERRIBLE.
Step 6: PUT THEM IN CASE!
That's it. Put them in the case.
Step 7: PIMP OUT YO CASE!
Pimp it. I used sharpie and an altoids tin.
Step 8: Done!
You are done! Hope this instructable helped. I need a final image, so here is my dog.