A 13 inch floppy disk is to put under your larger plant pots. They also hold 130k of data (the High Density version), enough for one regular email, or the letter "p" (only the lowercase one) if you're writing with Word. (but the entire Peter Pumpkin Eater poem will be there too, redacted but recoverable).
A 4k memory chip is used by kids along with drinking straws and popsicle sticks to make dinosaurs. Very good on the Stegosaurus. Either that, or the entire operating system of Apollo 9 (which, of course, actually used little donuts of magnetic ceramic, 1/4" diameter, one per bit).
And what was Apollo 9? Oh hell, I give up. It's all in the Christian Museum. Apollo 9 was used by the larger, cuddlier dinosaurs as a throw cushion, while being read bedtimes stories by the Apostles.
Now I've gone and done it.