3. The other method involves the thing your aunt gave you which you don't know what it is.
4. To obtain the flowerpot using the Thumb, just pick up the pot and hitchhike.
5. For more details, see the question on getting out of the whale.
6. To obtain the flowerpot using the aunt's gift: the aunt's gift has an unusual property you may not have discovered. See the question about the aunt's gift.
7. Just put the flowerpot inside the aunt's gift and then wait until the whale splats. Within a few turns after leaving Dark, the aunt's gift should reappear, containing the pot.