Craziest Invention

I have never seen a very crazy invention. I always hear of crazy invention, but would be impossible to make. I dont think meny inventions are cray, but i do think alot of them are unessassary. Like invetnions that have no purpose but to make you lazier, i dont think thay should be around. Our world is alreay obesse enough, why not make more inventions to make like easier?