ANOTHER GAME TO PLAY WITH THE HERD- Ball Toss. Would also make a great "rainy day" activity. You could even find tubs or buckets of varying sizes (like nesting bins) for more of a challenge for the older kids (Think Skee-ball).
balloon decorations without helium. Smart since there is a global helium shortage cheap easy party decor. put a small marble in the balloon before hanging it upside down and they won't move around so much when air hits them or people walk by