First Aid Kit
A simple first aid kit for hiking is crucial and essential. It should contain:
The essentials:

First aid manual (clearly explains how to handle basic problems)
Basic bandages (assorted adhesive bandages, athletic tape, moleskin)
Basic drugs/lotions (aspirin, antiseptic, antacid tablets)
Basic first aid tools (tweezers, small mirror, razor blade)

The extra:

Additional bandages (gauze pads, ace bandages)
Additional drugs/lotions (burn ointment, skin lotion)
Additional first aid tools (sling, basic splint, instant ice pack)