Geist is a nifty addon that helps clear up your hot bar yet keeps all your stuff close at hand. You set up a keybind and whenever you hold it down a box of up to 25 hotkey slots appears wherever your mouse is located on your screen. I love how it doesn't appear at a fixed location because we usually have static boxes that pop up all over the place ranging from Omen to WIM. Mine is in the pic and as you can see I have all my food and potions in there along with various engineering items.
You can download Geist from here.