for Jeanette, this is the Boy Scout recommended first aid kit for a patrol or small troop:

1 2" roller bandage
2 1" roller bandages
1 roll of 1" adhesive tape
24 alcohol swabs
1 box of assorted adhesive bandages
2 3"-wide elastic bandages
12 sterile 3"x3" gauze pads
4 3"x6" pieces of moleskin
2 packets of gel pads for blisters and burns
1 tube of triple antibiotic ointment
4 triangular bandages (40"x28")
1 small bar of soap or small bottle of alcohol-based hand sanitizing gel
Scissors
Tweezers
12 safety pins
1 splint
6 pairs of non-latex disposable gloves
Protective goggles/safety glasses
CPR breathing barrier
Pencil and paper

Optional recommended items:
An instant cold compress
A space blanket
A SAM Splint

Unfortunately it will typically cost a lot of money and time to buy the components on their own.

Fortunately Adventure Medical - a very well respected maker of first aid and other outdoor kits - makes a kit for the Boy Scouts with the non-optional kit items:
http://www.scoutstuff.org/kit-bsa-troop-1st-aid.html#.VbzIaflViko

I don't find this kit on Adventure Medicals regular website. I haven't taken the time to look to determine which if their regular kits is closest to this.