What you will need:
Wooden shapes (mine are from Bunnings)
Plastic large/oversized buttons (mine are from a local $2 shop)
Hot glue gun
Paint (I used acrylic)
1. Paint your wooden shapes the desired colours and wait for them to dry
2. Glue magnets on to the back of the plastic buttons and painted wooden shapes
3. Ensure the glue has fully dried before you give them to your child for use.
Make sure you supervise your child when using the magnets, to stop them from putting them in their mouths (as if the magnet comes off the back of the buttons or shapes it may be a choking hazard).