This article presents an engaging activity in which high school students use a dichotomous key to guide the creation and classification of model insects from recycled plastic lids and containers. Besides teaching the use of a dichotomous key and the effect of evolutionary descent upon groupings of organisms, this activity focuses on an often-neglected area of science teaching: creativity (Yager 2000). In contrast to many published activities that engage students in classifying manufactured items or food (e.g.; Burns 1998; Barrett and Matthews 1998; Crowther 2003), the activity described here involves students in studying real organisms.