You will need an electric toothbrush with soft bristles. The electric toothbrush I'm using retails for $5 and after six months is being retired.
To pollinate the flower, turn on the toothbrush and gently and briefly touch it to the petals or stem of the flower, or flower cluster. Do not touch it to the face of the flower. That's all that is required, simply keep the toothbrush in with your garden tools and spend a few seconds each time you visit the garden, the results will be worth it.