Your sister, as it must be evolved, creates weaponries of various technological virtues. A lot of them are for super-villainry, such as her several doomsday devices. These include the DOOMSCO BALL, CATENATIVE DEVICE, and the Throwable DEMON CORE. In addition to this, she takes on designs of old weapons, such as the bazooka or sniper rifle, and modifes them so that they are even more powerful. Her version of the bazooka shoots a missile, sure, but that missile is guided using some hacked Illusory Vessel technology to perfectly guide the missiles. That and the missiles 3 times more powerful.
You've always been told not to touch them by her. Even when she was just starting out making some pipe bombs, she always said "tuch on of thees adn yull loose your rms" and that usually made you quiet. You just watched in awe at the feats of science that she was just pulling off. You were invigorated by the technology of it all. You don't think you could do that even if you tried and knew the things she did.
You know what, screw her rules, you go ahead and touch one of the devices.