Picture books about Australia for preschool and kindergarten. Use with Apologia's Around the World (multi-level) History and Geography homeschool geography, homeschool history
Australia for Kinder Kids has 50 fun Language and Math 'Australia themed' printables, including: labeling Australian animals; Read, Roll and Write sight words; Counting by 5 and 10 and using Tally Marks.
Create a simple koala craft using collage. A child aged months should be able to use 'another', so try some sabotage and don't give them enough paper to stick on.