noun informal

(functioning as singular) an object of little or no value
(functioning as singular) a small device or gadget
(functioning as plural) odds and ends; litter or rubbish
(functioning as singular) a silly person

Word Origin for gubbins

C16 (meaning: fragments): from obsolete gobbon, probably related to gobbet
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Examples from the Web for gubbins

Historical Examples of gubbins