* bowling.ac, plunger.ac, cake.ac, bomb.ac, anchor.ac
    created by MiniBjorn (c) 2008
    released under Creative Commons Attribution-Share Alike 3.0 [http://creativecommons.org/licenses/by-sa/3.0/]

* bubblegum.ac, nitrotank-big.ac, nitrotank-small.ac, giftbox.ac
    created by MiniBjorn (c) 2008
    released under Creative Commons Attribution-Share Alike 3.0 [http://creativecommons.org/licenses/by-sa/3.0/]

* banana.ac
    created by horace aka thomas oppl (toppl@fh-sbg.ac.at) (c) 2008
    released under Creative Commons Attribution-Share Alike 3.0 [http://creativecommons.org/licenses/by-sa/3.0/]

* chest*
    by MiniBjorn (c) 2010
    released under Creative Commons Attribution-Share Alike 3.0 [http://creativecommons.org/licenses/by-sa/3.0/]

Others are GPL.