A coffee mug, donut or donut box will increase your energy. A caffeine pill will give you a quick blast of energy. To defend yourself from hostile takeovers you can use a staple gun, major staple gun, or a shrapnel gun. Of course to use any of them you'll need to gather ammo. You'll also find Mystery Vials in the game, the result of experiments gone awry in the laboratories of ScumCo Inc. The effects of these are unpredictable and inconsistent.