As I write this there are only thirty-four (34!) shopping days left until Christmas. I therefore consider it my obligation to inform you of a couple of wonderful gift choices perfect for the entomologists in your family.
I am pleased to recommend a brand new regional insect guide for residents of, and visitors to, the upper reaches of Minnesota, Wisconsin, and Michigan, as well as the fine folks in adjacent Canada. Insects of the North Woods, by Jeffrey Hahn, is the latest offering in the "North Woods Naturalist Series" published by Kollath+Stensaas Publishing in Duluth, Minnesota.
This little gem of 246 pages covers most of the common families of insects likely to be encountered in that region of North America. I can personally attest to the effort that goes into assuring the utmost quality of this entire series, well worth one's investment because of their user-friendly nature, lavish photography, and compact size. Since most of the species profiled also occur elsewhere in eastern North America, the geographic slant to these publications is of minimal consideration. They are a handy reference almost anywhere east of the Rockies.
Much as I hate to "toot my own horn" as they say, you might also consider picking up a copy of my Kaufman Field Guide to Insects of North America, authored by myself and naturalist extraordinaire Kenn Kaufman. Kenn really doesn't get enough credit for this book because he is modest to a fault, and won't readily admit that he wrote the sections on moths and butterflies, dragonflies and damselflies, and many of the grasshoppers and crickets. Oddly, his finely-honed skills at editing text and images, and layout of plates seem to constantly take a back seat to his expertise in world bird fauna and rock guitar-playing.
The North Woods guides and Kaufman guides in general make excellent complementary gifts sure to please the naturalist who has everything (else). Please feel free to share your own favorite books, gadgets, and other bug-related products in the comment section of this post. I'll be eager to hear what has served you well in the field and your library. Happy holidays, friends.