input question: To keep hands free while travelling in public, without compromising your style,

output answer: use a small backpack instead of a bag.

input question: To save a stale muffin.

output answer: You can bring it back to its original goodness in a few minutes by placing it in a steamer basket suspended over (but not touching) simmering water.

input question: How to make urine solution to tan salmon leather.

output answer:
Mix equal parts urine and water in an airtight container big enough so that the salmon skin floats freely in the solution.