I'm working through Complete list of encyclopedia topics/K at random, but trying to avoid places and people. So far I've started: K56flex -- Ka-25 -- Ka-50 -- Ka-bar -- KAB-500KR -- KAB-500L -- Kabaddi -- Kabbalah -- Kaber -- Kabir Bedi -- Kabuki -- Kadiogo -- Kagoshima -- Kaifu Toshiki -- Kaiser Wilhelm Geschutz -- Kainite -- KAIST -- Kaj Harald Leininger Munk -- Kajang -- Kakorrhaphiaphobia -- Kalahari Desert -- Kaleidoscope -- Kali -- Kalmia latifolia -- Kalohi Channel -- Kalsilite -- Kamacite -- Kamagraphy -- Kanaris -- Kanchenjunga -- Kandahar -- Kanem-Bornu Empire -- Kangaroo -- Kansas-Nebraska Act -- Kansas City -- Kaohsiung -- Kaolinite -- Kapok -- Kaposi's Sarcoma -- Kara Sea -- Kara-Kum -- Kara-Su -- Karachi -- Kareem Abdul-Jabbar -- Karel Hynek Macha -- Kariba Dam -- Karl Benz -- Karl Bernhardovich Radek -- Karl Ernst von Baer -- Karl Ferdinand Braun -- Karl Gustav Ahlefeldt -- Karst -- Kaspar Schwenkfeld von Ossig -- Katanga -- Katers pendulum -- Katharometer -- Katherine Hepburn -- Katina Paxinou -- Kawasaki Ki-56 -- Kazimir Malevich -- KCMG -- Kellogg-Briand Pact -- Kemo-Gribingui -- Kemp Town -- Kendo -- Kenilworth Castle -- Kennelly-Heaviside Layer -- Kerberos -- Keflavik -- Kerguelen Islands -- Kekule von Stradonitz -- Kermit --Jerome David Kern -- Kern County -- Kernite -- Kerosene -- Kenneth Kaunda -- Kenny Dalglish -- Kesgrave -- Kestrel -- Ketamine -- KGB -- KHAD -- Khios -- Khyber Pass -- Khmer Rouge -- Kickapoo -- Kidney --Kidney Stone -- Kiel Canal -- Killer whale -- Kilt -- Kim Il Sung -- Kim Philby -- Kingfisher -- Kings Royal Rifle Corps -- Kingsley Amis -- Kipchoge Keino -- Kirlian photography -- Kissing Bug -- Kitasato Shibasaburo -- Kitt Peak National Observatory -- Kitty Hawk -- Kiwi Fruit -- Kiyoshi Atsumi -- Klaus Barbie -- Klaus Fuchs -- Kliment Yefremovich Voroshilov -- Klinefelters Syndrome -- Knout -- Know-Nothing movement -- Knud Johan Victor Rasmussen -- Knute Kenneth Rockne -- Kolmogorov-Arnold-Moser Theorem -- Komodo dragon -- Konrad Emil Bloch -- Konstantin Eduardovitch Tsiolkovsky -- Konstantin Stanislavski -- Konstantin Ustinovich Chernenko -- Krugerrand -- Krupp -- Krzysztof Penderecki -- Kublai Khan -- Kumquat -- Kundalini -- Kunzite -- Kurt Waldheim -- Kuomintang -- Kvass -- Kwame Nkrumah -- KwaZulu-Natal -- Kyanite -- Kyushu and a few others.
Basically look for any short K article that is brief and looks as if it was written by someone ignorant of the subject - then it's one of mine!
Naval Space Surveillance System, this was a K too. Kickapoo -> Lake Kickapoo -> NAVSPASUR.
Adrenal gland - fell off the back of a kidney. John Ambrose Fleming from Kenotron. Catharine of Aragon from Katherine of Aragon. Christopher Houston from Kit Carson. Chagas disease from Kissing Bug. Great Rift Valley from Kenya. USS Kitty Hawk and Curtiss P-40 from Kitty Hawk. Laparoscopic surgery from Keyhole Surgery.