Goal and options: D.I.Y aged paper with used tea bags.
output answer: Make a strong tea with 6-7 used tea bags. Take a soft towel dip it into the tea and dab the tea onto the paper. Use heavy books to weigh down the damp treated paper to prevent warping.

Goal and options: How to make a resealable lid for cans?
output answer: get food grade putty, mesh it to the top of can, then wait for it to set, once set, wash it and use as needed

Goal and options: Remove crust from grill.
output answer:
Scrape with steel wool.