Grist for the mill(idioms)
Something useful or needed.
Hindi meaning:कुछ काम की चीज़
Synonyms: Helpful, Useful, Valuable, Gainful
Antonyms: Useless, Unhelpful, Worthless, Unusable
Example: Ever since I started making patchwork quilts, every scrap of cloth I find is grist for the mill.
Trick to remember: Cotton mills job ke liye Grist for the mill hai. 
