You could do anything with knex. The idea came to me when someone was getting a key from the BACK of a hook full of keys. This is a way to make two hooks into six.
these are the parts you need.
Step 1: Make the Hooks
build what you see from now on.
make five more of these
Step 2: The End Caps and Holders
make two of each. the blue rod can be put anywhere on the top to match the hooks or nails
connect everything. Now your done!