(Let me preface this by saying I have not read every cosmere book, only the Stormlight archive books, as well as the Mistborn series up through the end of The Well of Ascension. Though, I do plan on reading the rest before the year's end.)
As I was finishing up WOA tonight, I came across a small sentence that struck me as odd. As Vin wandered the Lord Ruler's room, there were objects from his people, the Terrismen:
It is possible that the Lord Ruler's flute simply refers to his past Terrismen duties, as it would seem to be fitting that he would be a wanderer of knowledge, and possibly have a flute. However, we see small wooden flutes throughout the Stormlight Archives:
Hoid traveled with a flute that he gave to Kaladin. The flute was ancient and considered special. We also know that Amaram has a collection of small, wooden flutes. It all seems too connected to be a coincidence. There must be a greater purpose for these special wooden flutes. I doubt that it is a tool for world hopping, though I do ponder that possibility. Maybe there are other wooden flutes found throughout the Cosmere books I haven't read about yet. Either way, I was wondering if anyone had any thoughts on the matter.
Space travel seems a lot easier with the... New machines we found in the last novel. Long distance space travel also makes Pulsers VERY useful. Makes one wonder if this is how a hopper in the cosmere would prevent aging when hopping.