pick-and-mix 
(also pick 'n' mix)
adjective British
Denoting a method of assembling something by choosing items from among a large variety of different possibilities: enjoy the freedom and choice of our pick-and-mix holidays...
- ‘What drove these young men to take such risks?’, asked one article in the newspaper, before offering a pick-and-mix selection of possible reasons.
- If it works, use it but be aware of the spirit of the land and beware of putting together a pick-and-mix of elements from different traditions - they may not work together.
- The pick-and-mix format of one day modules was chosen because directors of SMEs find it easier to take a day off here and there rather than leave their offices for an entire week - or even longer if they were studying for an MBA.