Which adorable Pen Pal character will you get? Make your very own light-up liquid wand pen in glittering metallic colors! This clever collectible activity allows you to add in plastic bubbles, colored microbeads, accessory and special metallic Pen Pal mini-figurine to the pen barrel. Fill with mineral oil and tighten. Watch as the Pen Pals swim up the pen as the other elements cascade to the bottom. Swirly World pens make a gorgeous color-changing rainbow light show as you write!