Getting kids to hook on brushing is good. It helps to give him a healthy teeth and gums. My son loves brushing and we bought these Disney Winnie the Pooh Oral-B toddler’s toothbrush for him from Target. They are the Winnie the Pooh and Tigger designs.  This is the right size for toddler … well they were meant for them.  I change this once every 6 months or depending how soon the brush deteoriate.  Sometimes toddler just loves to chew on them with the tooth paste on.  If I remember, I paid like $2.50 plus sales tax for each of them.