There's a small device called a Buzzy that's used in the hospital to help with pain relief. When he's put on the skin, he vibrates and this together with cold numb the area. And when put between the source of the pain and the nerve pathway to the brain, nerves get confused and there's distraction from the pain. It's often used for young patients who have to have regular injections for example for arthritis.
He's a friendly looking wee chap already but we've made a little postcard poem for the children to take home with them to make him seem even more friendly.