What are some ways to get your baby to sleep without using a bottle or pacifier?

My daughter is almost 18 months old and she drinks out of a cup all day but at night she almost never falls asleep without a bottle. It's frustrating for both her and I because if she wakes up in the middle of the night she usually needs another bottle to sleep again. How can I get her to sleep without needing a bottle? (she is not interested in pacifiers at all). Thank you!