Goal and options: How do you clean milk jugs before recycling?
output answer: put some water and dish washing detergent in it and place the lid, shake vigorously, then empty the contents.

Goal and options: how do you jump start a car?
output answer: use another car connected to it to start it.

Goal and options: use nailpolish for color coding keys
output answer:
Apply a different color of nail polish to each key and let dry