1. Plan: Fly over the Mount Doom on an Eagle and drop the ring in the lava. Flaws: Frodo might not drop it.
2. Plan: Create a time machine and stop Sauron from making the ring. Flaws: That would take a loooooooooooooooong time.
3. Plan: Pretend to be on Sauron's side then when you’re near Mount Doom throw in the ring. Flaws: Sauron would take the ring before आप got that chance
4. Plan: Have people go into Mordor and reroute the lavas flow to a सुरक्षित place where Frodo can throw the ring in easily. Flaws: The number of people it would take to do that wouldn’t go unnoticed, and won't that take to long...