Board Thread:Suggestions/@comment-24108228-20141010230721/@comment-24108228-20141012222822

Assuming you ignore the move tool (because it's use is really limited and can be taken off the hotbar without any issues arising afterwards), then you have four core survival tools, and therefore 6 free slots. One for a fire-making tool, one for a water container with whatever you drink as a water source, three for multi-wielding the tool for whatever you're doing, and one spare for a herbal remedy bucket, poison bucket, or any other misc tool.