Eyedroppers
Vials or other screw-cap bottles
Microscope slides and cardboard slide box
Magic marker
Drinking water with chlorine in it
Notebook
Pen
Plastic bags that seal
Plastic slide box or plastic centrifuge tubes
Diamond scribe
Camera with film
Topographic or another kind of map of the area
Thin coated copper wire (telephone type), braided fishing line, or rubber
bands
Rag or paper towel
Bamboo skewers or pencils
Flagging material
Sticky labels