Making arts and crafts with your young learners as a follow up activity is a nice idea.
You can reinforce some previously taught vocabulary whilst they make something that they can take home and proudly show their parents. Parents also can have some insight what topic you are on in your ESL class.
So at the zoo animals topic your young kids can make this paper lion mask. Boys will specially love making a fierce, fierce lion!!!
What you will need:
Old newspapers (to cover the tables)
Orange or yellow cardboard paper
or white paper and yellow paint
Brown tissue paper
Black felt-tip pen