It is an easy task and won’t take you much time. The only thing is that you will have to wait for the sunflowers to grow and water them regularly.
What you will need is eight wooden spikes, rope or sisal. Look on the image how to tie the spikes and how to place the sunflowers.
The best time to sow the seeds is around March or April, when the temperature is over 8-10 degrees Celsius. The only thing that left is to take care of the sunflower and when it is big enough to invite the children in the natural gazebo and have some fun with them.