This is an item of stationery (paper or writing goods), or other small merchandise such as good-luck charms, mascot straps, et cetera.
Here's a highly collectible Zippo lighter featuring embossed Autobot symbol on one side and an embossed Decepticon symbols the other side of the lighter's body, plus an engraved movie title on both sides of the hinged top. The metal lighter measures 5.5cm tall by 1.3cm wide by 1.3cm deep. Please note that the photos shown are of a prototype; the production version may vary.