Goal and options: To cut the seams out of a piece of clothing, you can
output answer: Use a mat or utility knife

Goal and options: How to prevent damage to the riding seat of a bicycle?
output answer: Every few weeks or so use a leather sealant on the bike seat and allow the sealant to dry over night before riding again

Goal and options: Clean dried sticky soda out of a soda bottle
output answer:
Run hot water into the bottle until full, let sit overnight, empty out water, fill with 1 tbsp of soap, fill with water, place lid on, shake for 2 minutes, rinse clean with warm water