Yes, you will need something for your child to play on. You don’t need to spend a lot of money; an electronic keyboard is fine. Please make sure that it has weighted keys, that you need to press down to make a sound. You will also need a sustain pedal.
If you live in the Colac/Otway region of Victoria, we recommend the Roland FP10 Electronic Piano at Toshco Music, 182 Murray Street, Colac (opposite the K-Mart Hub).
A good selection can be found here at Amazon Australia:
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There are often second-hand pianos for sale on Facebook and Gumtree. Make sure they are in good condition and if they are an acoustic piano, have been tuned regularly.