Tom Brown's Field Guide to Wilderness Survival
Handmade wedding gift and card, both made from an old field guide to birds. A link to the flower how-to is on the blog post. Cost: $0.00!
Make it Yourself
Warman's U.S. Stamps Field Guide: Values & Identification (Warman's Field Guide)
Kaufman Field Guide to Insects of North America (Kaufman Field Guides)