It was in a previous patch: you'll have to go to the NPC at the wheel, and ask him to tup the plushies from your bag (one by one) in Rywards. Once in Rywards, they can be sent via "IG mail" through the "Exchange" command from Rywards.
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Peu importe que la chope soit à moitié vide ou à moitié pleine, tant qu'on a le tonneau.