The Geosafari Adventure Pens from Educational Insights promote curiosity, exploration, a love of science, discovery and an early appreciation for unusual pens. There are three different pocket-sized pens that have been designed to let your little scientist go out into the world to collect and study specimens from Land, Light, and Water. The Land Adventure Pen includes a collection vial and a 4x magnifying glass. The Water Adventure Pen includes a water dropper, a test tube, and a 4x magnifying glass, and the Light pen includes a built-in ruler, an LED light, and 4x magnifying glass. You can grab a set of three for $20.52 from Amazon.