To start work on an application you must have a reasonably well developed idea of the proposed use for the funding. Your project must make a valuable contribution to knowledge; projects often involve the investigation of a subject that has not been studied before however they may also investigate subjects from new perspective or using new technologies.
Good ideas are likely to:
have a life beyond the idea itself: for example, enabling further research and PER by sharing information through publications, providing openly accessible data, testing new concepts or new techniques, or making cross-disciplinary connections.
have a life beyond the academic community: for example, reaching new audiences by providing educational resources and experiences, inspiring the public through exhibitions and events, or changing museum or industry practices.