To introduce this popular song to my class of 5-6 year olds I made a simple felt board out of an old cardboard box. I then covered it with a black flannel blanket and simply taped the reverse side with sticky tape.
To make the monkeys, mummy and doctor I downloaded some drawings from the internet, coloured them in and laminated them. It is a good idea to laminate as the plastic not only protects your characters but also enables you to stick double sided tape to the back so they can then be attached and removed easily from the felt board.
At the end of the lesson I distribute to the class paper monkey finger puppets which the children colour, cut out and stick to their fingers ready to sing the song again all together during the next lesson. The children seem to really enjoy making their own finger puppets and it is a great way to involve and engage children in learning numbers and new vocabulary.