Overall, the Greek dead were considered to be irritable and unpleasant, but not dangerous or malevolent. They grew angry if they felt a hostile presence near their graves and drink offerings were given in order to appease them so as not to anger the dead. Mostly, blood offerings were given, because they needed the essence of life to become communicative and conscious again. This is shown in Homer's Odyssey, where Odysseus had to give blood in order for the souls to interact with him. While in the underworld, the dead passed the time through simple pastimes such as playing games, as shown from objects found in tombs such as dice and game-boards. Grave gifts such as clothing, jewelry, and food were left by the living for use in the underworld as well, since many viewed these gifts to carry over into the underworld. There was not a general consensus as to whether the dead were able to consume food or not. Homer depicted the dead as unable to eat or drink unless they had been summoned; however, some reliefs portray the underworld as having many elaborate feasts. While not completely clear, it is implied that the dead could still have sexual intimacy with another, although no children were produced. The Greeks also showed belief in the possibility of marriage in the underworld, which in a sense describes the Greek underworld having no difference than from their current life.