Kids love to imitate what their favorite person is doing. May be because of that my toddler son loves writing. He got his grip of holding pen at very early age . Incase yours is a baby now start writing whenever he is watching. He will soon grab your pen n go for it the way you do .
If your child has crossed 2 may be this is fun way to introduce writing practice. All it needs is a tray and salt .
Just got this idea from teachpreschool. Check it out for detailed description .