I noticed a few weeks ago now that I never really used my consumables when I was supposed to. On my Resto Shaman, I have Nature's Swiftness bound to Q (since my left hand is always on WASD) as a panic button-- need a heal instantly, hit it fast. But consumables like potions and healthstones just sat in my bag-- I almost never remembered to whip them out when the party was going down.
So recently, I opened up the second hotbar on the right side, and put all my various pots and healthstones there. That way I'm just one click away from one if I need them. And that's worked pretty well-- now, even the tank sometimes forgets to use his healthstone, but I always have them available in a clinch.
But they're still all the way on the side of the screen, and it seems like I could do it faster. How do you have your consumables set up? Do you forget to use them all the time, or do you have them bound to a certain key, ready to jump into action at a moment's notice?