FOSS gamedev and creative worlds

this is a VERY simple policemen mod. It contains 2 items without recipe. That way it can only be owned if you have the privelege giveme or got them. These items are (in the 1st release) a Police Card for indentifying yourself, and a weapon, a police baton. I am working on a Bobby Helmet, but the code is too hard for me (this is my first mod, made by modifying other mods).
the screenshot(items are in the crafting square):
http://uploadedimagesbyme.blogspot.nl/2015/08/blog-post.html
Dependencies: default. (And a player that installs it [joke])
Licence: inside the package.

For the helmet, you could use the 3d-armor API.