(https://songcrafters.org/community/index.php?action=dlattach;topic=17417.0;attach=18430)
I've seen the cake versions before but not the sushi.
(http://www.vocode.com/images/posts/roland-tb-303-cake.jpg) (http://www.synthgear.com/wp-content/uploads/2009/05/tb-303-cake.jpg)
(http://1.bp.blogspot.com/_rScBRKlTdoE/Sta3j8PVpFI/AAAAAAAAibc/f0x64lGXdZw/s1600/TB-303Cake.jpg) (http://4.bp.blogspot.com/_rScBRKlTdoE/Sta3kWX-GgI/AAAAAAAAibk/90S5oCoRObs/s1600/TB-303Cake2.jpeg)
A Google search for "roland cake" turns up a few more interesting items. No BRs though.
(http://www.synthgear.com/wp-content/uploads/2009/05/roland-jp-8000-cake.jpg)
(http://www.synthgear.com/wp-content/uploads/2009/05/snythcake.jpg) (http://4.bp.blogspot.com/_rScBRKlTdoE/SnCQrIB93-I/AAAAAAAAZKc/iCelwc_9kYU/s400/DSC_0002.jpg)
(http://s3-media2.ak.yelpcdn.com/bphoto/fzwtZqqyInJVL2yrBvJOkA/l.jpg)
(http://3.bp.blogspot.com/_FMBJEkaC8Lw/R-UyGlL9ziI/AAAAAAAAQ8E/Wxiod7DlUTM/s400/JP6+cake+01.jpg) (http://2.bp.blogspot.com/-1Zjv2ns1w2c/TyZEeoELbFI/AAAAAAAD0rA/BpfiAtZ0CAA/s400/cake.jpg)