1. Thermacell Radius Insect Repeller ($50)
This fist-size, battery-operated device creates a mosquito-free bubble around a picnic by vaporizing an odorless chrysanthemum-based repellent. It's effective for clearing a 110-square-foot area, and runs for about six hours on a charge. Buy it at Amazon.
2. PortoVino Wine Purse ($70)
When you're picnicking on the sly, this fashionable tote can be your best friend. "Roomy enough to hold all your essentials" — including cheese and crackers —...