Great for: Friends. A daybed keeps its secret function under wraps when your family is using the guest room as office, playroom, or whatever it's called the other 364 days of the year. When it's time for a sleepover, just bring on the pillows and blankets. This striking solid-wood bed lacks the big-furniture clunk factor yet fits a standard twin mattress.
To buy: Overlapping Squares Daybed (78 by 41 1/2 by 30 inches), $459; with mattress, cover, and bolsters, $959: westelm.com.