Working with Tenderhearts is so much fun. I love the hands on approach to learning that can be included in badge work.
Requirement number 4 of the Insect-a Inspect-a merit badge has the girls view an insect collection. These are often available at major universities or museums. If you do not have one available to you, how about a virtual field trip?
Digging around the web, I stumbled upon an amazing photo blog by Coke Smith (www.cokesmithphototravel.com). As a nature photographer he has some amazing pictures. Included in his collection, are photographs of his insect collection grouped by Family. Start here and explore all the bugs he has to offer.
If you are interested in the Insect-a Inspect-a merit badge, check out these additional resources.
NOTE: The requirements have been greatly simplified here. Please be sure to read the full text in the Girl Handbook to make sure you fully understand the requirements.