Keep your best buddy close at all times with the pet ghost in a bottle. This pet requires minimal upkeep and emits ghoulish sounds every so often so you never feel like you’re completely alone. Finally, a pet that wo’t die if you forget to feed it – because it’s already dead. A Halloween product line that features “frightening ghosts” that have been captured in a bottle. To make the pet ghosts appear and to hear one of three spooky sounds, you press the top of the bottle’s stopper.