Wow, Scissor Queen what a great idea... I use a medicine divider so similar to yours but the button idea is great... I have just been writing what's in my machine on masking tape and sticking it on the machine...

I always put the needle back in the case it came from. I always pull a new needle from the left side of the case. I always know the the needle on the left is either slightly used or new. When a needle needs to be replaced I put it in a medicine bottle marked used and when it is full I toss it out.

I also keep my needle pkgs. stored in an ice cube tray in a drawer near my machine. The ice cube tray also hols my assorted presser feet.
peace