I live in an off-campus house at college. It's a little thing: three beds, kitchen, dining room, living room. A sofa.
But no coffee table.
Not that anyone in my house drinks coffee, but we've wanted a knee-height table for the sofa for a while. Just to set drinks down on, or to use for homework.
As long as I'm home, I decided to build one. As a design constraint, it's made entirely from 1x3 strapping. There is some reason for the choice. First, at $1.30 per 8' board, 1x3 is cheap. Second, the 1x3 theme matches a toolbox I built this summer. Third, it's cheap.