Yesterday, we highlighted the hidden "labs" feature in Nova Launcher. Turns out that's not the only of TeslaCoil's apps with a secret menu - popular lockscreen replacement app WidgetLocker has a similar feature, except it's called "experimental." For all intents and purposes, though, it's the same thing.
It's also activated the same way: simply head into WL's settings menu and hold volume down for 1-2 seconds. Just like with Nova, you'll see a toast notification to let you know that the new menu was successfully unlocked.