Mason Jars are so versatile, and just scream to be decorated. I just used up some vinyl scraps and put dragonflies and dots on this one. You can use it as a candy jar, candle holder, or vase. It's completely washable.
I thought I would make one that says "Thanks a bunch" and put fresh cut flowers in it.
You could also monogram or initial it...so many possibilities.
I got the plain jars at A.C. Moore for .99.