Here's the audio equivalent of a flipbook: it's a thin strip of plastic with tiny ridges that talk when you run a fingernail over them. Oddly enough, you can't really hear the tale of the tape unless you scratch it while holding one end of the strip between your teeth. Or, you can hold it against an inflated balloon or a paper cup as an amplifier to boost its sound.
The $19.58 package includes four copies each of five different messages such as "happy birthday," "congratulations" and "have a nice day." It's a surprisingly innovative and analog way of communication. Once you're done with this, you can move up to two tin cans and a string.