It's kind of funny how certain trends make a comeback. I feel like today there are so many things that we have gone back to using or wearing that were phased out even 20 years ago (ie. spandex, neon colors, and CHALKBOARDS!) I remember when every classroom in my school went from chalkboards to white boards and it was the coolest thing. Everyone wanted to spend all day just writing on the white board and now chalkboards are all over the place again. I love how they add a playful feel to a space and depending on the art you put on it, the whole mood of the room can change. It's an easy (and inexpensive) way to change it up a bit.
Also, try it on less obvious things and get creative, like the furniture shown below or dinnerware for parties.