Set of ingenious plans (3,2,6)
I believe the answer is:
bag of tricks
'set of ingenious plans' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for bag of tricks that I've seen before include "Set of ingenious techniques (colloq.)" , "The whole outfit" , "Collection of special techniques or methods" , "Set of ingenious plans: the whole thing" .)