I can still recall the day I learned that you could copy a frame from the Sunday comics by pressing silly putty onto it. I thought that was the coolest thing ever.
Any time they want to mix it with graphene and inject it into my blood stream, I'm ready. I haven't seen a piece of Silly Putty in decades, but I can still recall its smell vividly. I loved that stuff. I think my childhood dog Smokey ate an entire Silly Putty once and crapped it out unchanged. I think it still had the image of Smokey Stover on it.