Most children have a favorite blanket or stuffed animal they must have to sleep well. We once drove 6 hours round trip to retrieve a child's "fuzzy" that was left behind at the inlaws!
Did your kids or you as a child have a special "something" that was needed for sleep?
What do you "need" now to sleep well? A favorite pillow? Specific room temp?
Fan? Specific blankets or sheets?