Double is almost over, and the Memories of the Earth will soon be replaced by Medals of Completion as awesome collectible gimmicks. But still, Gaia Memories are versatile, there could be almost an infinite amount of third party (Read: fan-made) ones. I myself developed four. However, these Memories are only theoretical, as they would not draw from the Earth's knowledge, but rather the memories of a dormant crucible of unlimited creative potential that lies within paradox space.
Of course, no such place exists, but it is described with much detail in a favored webcomic of mine. Click the text under the Memories to be transported to that wonderful place.
And if this does nothing for you, I promise that next week will be a Gashapon Pop. Even if Bandai doesn't update, I will make sure there is a Gashapon Pop.
Thanks to Andrew Hussie for giving the okay to give him more publicity.
This has been okniwy,
Don't Hurt Me Everybody!