bag of tricks
1. The items that one has available for use. The phrase originally referred to the items a magician would use for magic tricks. Let's see what I have in my bag of tricks to entertain the baby.
2. The skills that one has available for use. Our new pitcher has a killer fastball in her bag of tricks. She's an ace negotiator, so you know she has a few more surprises in her bag of tricks.
a bag (or whole bag) of tricks
a set of ingenious plans, techniques, or resources. informala bag/box of ˈtricks
(informal) a set of methods or equipment that somebody can use: Hotel managers are using a whole new bag of tricks to attract their guests.