Spread out your newspaper or dropsheet over the work surface to minimise mess.
You'll need some type of coasters for this project – we're using cork (found in the garden section of Bunnings) but you could also use MDF.
Using the acrylic paints, paint the coasters in matching colours – red for cricket, orange for basketball, green for tennis and so on. You can do four matching coasters, or four completely different ones!
Once you've done two–three coats of paint, leave to dry.
Once the paint is dry, start adding the detail of each ball with a felt-tip pen. Use a white pen for the cricket stitching and tennis ball lines, and a black marker for the basketball and soccer ball. You may need to go over the lines a few times to help them pop!
Leave to dry for a few hours, before wrapping up ready for Dad's big day.