Blue, purple and pink, they fight for attention, bobbing in the air and pulling away from their restraints.
The balloons wave at passerbys and excitedly point down the driveway to where fairy lights and streamers paint the house.
The sounds of squeals and giggles float around the property and invite grins as well as sparkles of nerves amongst the young children, still to make their way to the party.
Parents, on the other hand, brace themselves for an afternoon of headaches, tears and the odd tantrum.