Often, a fresh kalash and a puja thali are installed at homes, which represents Mother Goddess for worshipping along with a few idols or portraits of the Goddess. Generally, to break the day-long fasts during Navratri, singhare ka atta or kuttu flour is used to prepare porridge, rotis or puris; as well as sago and potato dishes, gram curry, milk and fruits are consumed.
Hindu scriptures inform that people should bathe two times a day during Navaratri, in the morning and evening, and worship Goddess Durga thereafter. To break the fast after evening worship, simple food items like fruits and milk are mainly consumed by most devotees. Also, devotees sing or listen to devotional songs dedicated to Goddess Durga during this period.
Here is my sentence acrostic on DURGA.
D: Divine mother of the
U: Universe, who
R: Removes sufferings and
G: Grants virtues and powers
A: Affably and compassionately.