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How to Build a Bat House

This simple one-chamber roost will give those beneficial bug-eaters a much-needed boost! Here's how to build a bat house.

How to Grow Your Own Crystals

It might seem like magic, but all you're doing is collecting salt crystals from evaporated salt water. (It's still cool!)

How to Build and Fly a Box Kite

Most altitude records for kite flying are held by box kites. Here's how to make a high-flying box kite with easy-to-find materials.

How to Build an Igloo

A brilliant use of engineering and resources, this simple dome made out of snow blocks is both strong and versatile.

How to Maintain Your Motor

Whether it's powering a sports car or a lawn mower or a go-cart, here's how to keep your engine running year after year.

How to Make Twig Pencils

Twig pencils are fun, easy and cheap to make. And the expressions on your friends’ faces when you start scribbling with a stick will be writetious!