錦囊

silk brocade bag, used in ancient times to hold poetry manuscripts and other precious items / (fig.) tip (a piece of practical advice)

sack / purse / pocket (for money)

brocade / embroidered work / bright

brocade sack of miracle plans (idiom); bag of tricks / fiendishly cunning masterplan (written out by strategic genius of fiction, and given to the local commander in a brocade bag)