As described by : Episode 2 had the box with six keyholes, and three episodes so far had what are widely suspected to be keys. All three objects have a rainbow shimmer in common, and were each received as gifts after demonstrating the character's respective element. Rarity has the rainbow spool of thread for example. This comic decided that Fluttershy's key would be a whale, which is far too large to even begin to fit in a keyhole.
Back in the end of january "i think" equestria daily had a picture of what they are looking like. Yes they are cute Am trying to forget it so that it have a greater impact on me once i see the episode.