People wear kaftan, kerchief, khakis, kilt, knickers and knee socks. They begin with the letter k.
Something you sit on that begins with K is your kiester.
Kilt
knif
Kia
Killers are bad and start with "k".
kool-aid
Ka-ching!
You can throw a knife. It begins with the letter K.
Karate Kid
kayaking knit
Kool Aid
kleenex