It's a tough choice, save the princess or save your coworkers from BO.
DeviantART user Mathijs Sterrenburg modified his toaster to look like the original Nintendo Entertainment System. Now is the time where I would usually make a crack about a "blowing on it" if it broke, but in this case, I find such a joke is actually appropriate: if your toast is too hot, blow on it!
Deviant Artist Midnight Angel put together an arm blade stylized after the ones used in the Assassin's Creed video game series. Using a drawer opening mechanism, a spring for a screen door, and a throwing knife, the weapon works surprisingly smoothly. The full instructions are on Angel's page, and you can see it in action below.