pick and mix

pick 'n' mix

noun

a selection of sweets from which the customer can choose, paid for by weight

adjective pick-and-mix

allowing the user to choose items or ideas and combine them as he or she wishesa pick-and-mix selection of fabric and wallpapers

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