This couldn't be the first time someone has thought of putting caps on either side of a toothpaste tube. Two Way Toothpaste is one of those ideas that make you wonder why this hasn't been thought of before. It's in the concept stage now, but this one's bound to be snapped up quickly by some toothpaste marketing giant.
Now if someone could just solve that problem with the crusty goo forming underneath the cap, and then figure out a way for a toothbrush to also floss teeth at the same time, dental care would finally be hassle-free. Next project: the toilet seat conundrum. Oh, wait.