The "Balls and balloons" B'day party can be for kids who love balls. The invitation can be written on a handmade paper ball.  The cake can be of either balloon or ball shape In my son'1st b'day, I got it made of the shape of a train, each bogie of different flavors, carrying colored chocolate balls and surrounded by balloons on the sides. The party area can be decorated with balloons as usual but balls spread around so that children can play and also take them away as return gifts. In addition to this, the return gift can include various different type of balls and balloons, lots of games like blowing balloon contest, pot the ball contest,  spoon race, bowling game etc can entertain the children along with playing with balls and balloons spread around