private Item getRandomItem() {
		int num = _random.nextInt(3);
		Item item;
		switch (num) {
		case 0:
			item = null;
			break;
		case 1:
			item = new PinkPlant();
			break;
		case 2:
			item = new GreenPlant();
			break;
		default:
			item = null;
			break;
		}
		return item;
	}