In context of Australia ; Please answer in detail and do not copy paste for any other source

1)A client has receipts for $50.00 from donations provided to door to door charity collectors. Can the client claim a tax deduction for this amount? Why? 4050 words

2) A client wants to claim $300 for work-related expenses and says they might not have spent that amount but because it does not need to be substantiated they will still make the claim. What advice would you provide? 80100 word