The phrase "dusty corner" refers to a neglected or forgotten area that does not receive much attention or care. It implies that the corner is covered in dust, indicating that it has not been cleaned or used for a while. Full definition
In truth, graduation rates have long been relegated to a dark, dusty corner of the educational statistics enterprise. (wacharterschools.org)
My own love of history began with the stacks of historical novels that I always found lying in dusty corners at my grandmother's house. (janefriedman.com)
As you pull each item off the shelves, from dusty corners, from under beds and couches, or wherever, put it in one of these boxes / bags. (paperglueetc.wordpress.com)