I keep collodion
http://www.newskinproducts.com/liquid-bandage.htm
in my FAK. It covers small cuts and abrasions without a bandage. It makes tape/bandages adhere to dirty-greasy skin if you paint it freely around the borders of the wound. It is volatile enough to enable a scrap of cloth to catch a spark as a fire-starting aid.

...and it stings like heck, by the way.