Where my child can write to his favourite characters such as Spongebob or Bob the Builder and other

Hi, can anyone give me a website that posts a lists of addressess for my children to write to their favourite charachters? Or does anyone know of these addressess themselves?

Thanks

Where my child can write to his favourite characters such as Spongebob or Bob the Builder and other kids favs?

Same as Santa...c/o The North Pole.