(If I could use all the letters only once)
King, Tick, Stock, Stoic, Sing, Sock, Gas, Gnat, Sack, Stocking, Sting, Cost, Cots, Got, Stock, Nick, Not, Knot, Stink, Kin, Cogs, Coin, Kit, Tog.
(If able to use more than once)
Scott, Kicking, Skiing, Kiss.