A small bottle full of planet mini globes.
Contains:
Mini Mercury
Mini Venus
Mini Earth
Mini Mars
Mini Jupiter
Mini Saturn
Mini Uranus
Mini Neptune
And Mini Pluto
The planets use relative, logarithmic-like scaling to each other.
If an object is smaller than another, it is probably a lot smaller, and if it is bigger, it is probably a lot bigger.
(Jupiter, to "proper" scale with that Earth, would be near the size of a watermelon!)