"Disclaimer: As the creator of this mod, I have less and less time to put into developing this.I hereby give everybody permission to alter, add, extend and modify the current code and release it as their own. The only thing I ask for is to credit me as the original creator of the existing code and linking back to this thread whenever you do use it. Furthermore,I am completely fine with any modpacks including this mod, as long as they credit the authors of all mods in that particular modpack for what work they have put into it- aMannus.""Since the previous maker of this mod, aMannus is no longer updating this mod I decided that I am going to update it from now on until aMannus has returned. " -matrix1368

This is just a version taken from the Chucklefish forums and uploaded to the nexus if you were too lazy to go to the forums.
The original maker of this mod, aMannus, has stopped updating the mod. So matrix1328 is who you should thank for the mod being up to date.

His version is posted here incase I forget to update the mod, Which I most likely will eventually.
http://community.playstarbound.com/resources/creative-mode.3101/

How To Install?

You can either follow the read me matrix1368 included in the file,
Or just read the same thing posted on the read me, But here.

1. Remove any CheatArmor, CheatEquipment or CreativeMode folders if you installed this mod previously. This is important.
2. Click that fancy download button and wait for it to complte.3. Unpack the .rar file and copy the Creative Mode map to X:\Steam\SteamApps\common\Starbound\giraffe_storage\mods
4. Start up Starbound. Then press the Crafting button (Standard C) and craft the Ultimate Box.
5. The Ultimate Box is placeable. Place it down and press the interaction button (Standard E).