Only one yard of duct tape?

I understand the limitations of the size of the case you are putting it all in, but I would try to squeeze in another few feet of duct tape at the very least.

Also I would add a needle with a large eye and a few feet of dental floss.

Package it in a small plastic straw or a coffee stirrer.

1. Heat and crimp one end of the straw.
2. Thread the floss through the needle like you are going to use it to sew something.
3. Put the needle into the straw and then wrap the floss around the outside of the straw. You can use a small piece of scotch tape to secure the loose end.

Just a few thoughts to help improve what you already have.

porkchop