I started with one of the little Atwater Carey 1st Aid pouches. I like the red color so anyone can find it in my pack (particularly important if I am the unconscious one ).

Roll of gauze
Rubber gloves
tweezers
Vitamin I
1/2" tape
Antiseptic wipes
Alcohol wipes
Safety pins (there should be a bandana in my pack always)
Sting relief pad
Povodine-Iodine oitment
Antibiotic oitment (now down one )
Gauze pads in a variety of sizes(down one also)
Cotton tipped applicators
moleskin
Benzoin tincture swab stick
Bandaids in all shapes and sizes
Contact lens rewetting drops
Chamois Butt'r

Somehow all this gets jammed into that little bag.

Bottom of my pack gets the duct tape, a space blanket and a roll of Coban

On my road bike, I carry only the contact lens drops, Vitamin I and Chamois Butt'r.