The player can also buy bottles in Tom Nook's store for 200 Bells each unlimited stock, like regular paper. If they write something inside them and release them, and a friend has done the same, when the two connect through Contact Mode/Tag Mode, they will each find afterwards their friend's note-in-a-bottle washed up on their beach, as well as both having each other's constellations. They can be saved in the Town Hall like Letters. The player can also send presents along with the notes.