You used to be able to get those plastic rockets with the metal tips. You put one of those red paper strip caps under the metal tip. Attach the rubber bands to hold it together then throw it in the air and when it came back down made the cap go off when it hit the ground.
Not forgetting computer games used to be on 45 minute per side tapes with multi load systems. Basically once you finished a level it started the tape up and loaded the next. Discs were five and a quarter inch and literally floppy in every sense of the word.