You can start with a purchased first aid kit, or you can keep everything in a zip lock bag. The important thing is that you have the necessary contents:
Bandages
Gauze Pads
Tape
Moleskin
Antiseptic
Exam Gloves
Tylenol
Pepto Bismal
Tums
Sun Screen
Chap Stick
Insect Repellant
Mouth Guard
Safety Pin
Comb (useful for removing cactus)
Tweezers
Thank you to Art Lurvey for providing this list.
A Scout is trustworthy, loyal, helpful, friendly, courteous, kind, obedient, cheerful, thrifty, brave, clean, and reverent.