Goal and options: to prevent water from leaking onto the floor from a leaky roof
output answer: determine where the leak is coming from, place a large empty bucket under the leak

Goal and options: How can I activate yeast for baking?
output answer: Add it to water that has been microwaved for 40 seconds.

Goal and options: To poke holes in leather, you can
output answer:
Use an awl or a hammer and nails