The Exploratorium has a simple how to on making a telescope using reading glasses – “You’re about to make a telescope. One lens of the reading glasses will serve as the objective lens of the telescope–the lens that gathers light from stars or other objects. The magnifying glass will be the eyepiece. This telescope won’t have a tube–that’s so you can see how an image is formed inside a telescope.” – [via] Link.
Build your own telescope