Smell is a powerful tool for memory recall. Try this: Before setting pen to paper (or fingers to keyboard, if you like), think of some powerful childhood smells. For me, near the top would be my grandmother’s cinnamon sugar cookies, sweet cut grass, and gas-filled mud puddles.
Notice that those are not all pleasant smells. As we all know, an important element of good writing is surprise. I once wrote a piece about how my father, a garbage-man, used to bring me and my sister treats he got from the trash. The recurring motif is my father’s rank work clothes, and the descriptions take me right back there. I think creative integration of smells will engage your readers as well.