Terms for subject Figure of speech containing paper

English	Russian
a meaningless piece of paper	филькина грамота (Leonid Dzhepko)
a useless scrap of paper	филькина грамота (Leonid Dzhepko)
just a piece of paper	филькина грамота (Leonid Dzhepko)
paper doesn't refuse ink	бумага всё стерпит (Eoghan Connolly)
subject of one's thesis paper	тема дипломной работы