For this task, begin by thinking of a house, or maybe just a room you remember: or you could choose a workplace or an office - anywhere, really, that means something to you.
Draw a rough sketch plan of the place. Then annotate it: eg This was where my sister and I listened to records; The sitting room where we watched TV together and I first saw... etc.
Then choose one of the memories/notes, and use it a a springboard for a piece of writing: could be a story, could be memoir.