Alright so...
Missing Tools:
Mirror (Largely useless for our purposes, as it essentially only allows us to get information on the other side of a border, if we ever needed the mirror for something, it would probably mean that we couldn't go through the gap at all.)
Wrench (Allows us to move gaps for great distances, this is only theoretically useful, but the only gap we have so far that would actually require the usage of the Wrench it would be the Sound Bubble, which, as we checked, seems to have little purpose right now.)
Astrolabe ("Press this button to finish the quest", likely the very last tool we'll find.)
Vice Grips (Our current objective as it would allow us to open two different gaps and actually make some sort of progress. However, we have zero clue on where to find it.)
Well, here goes nothing:
> Insight: Where can we find our Vice Grips?
> Break the fourth wall and use the Magnifying Glass on whatever information the parser gives us, to get even more information.
Note: Players, feel free to belay that, we only have one more Insight Point, after all.