Bag of components

A small cloth bag that has a homemade look. When casting a spell that requires components you can use a charge to pull the component out of the bag. You must roll a flat 20 when using the bag, on a 1 the makes fake looking component instead of the real thing. The components has to fit in 3ft cube and cannot exceed 2000 GP in value. Roll 2d4 to determine charges every long rest.