Ecological Attire:

Appropriate attire will be crucial for field trips. This outfit works for weddings, but isn't much good in the rain, heat, humidity, and sweaty squalor of  field activities.  Similarly, thongs, shorts, and a muscle shirt will provide multiple avenues for mosquito, chigger, and poison ivy attacks - your choice!  Also - bring large zip-loc bags to keep notes and books away from the sweat and the rain.