Yes, however, only certain items, such as "Windblume Festival Commemorative Balloon," "Windsong Lyre," and "Wind-Blessed Harpastum" are available for purchase from Marjorie at the Souvenir Shop in Mondstadt. We could potentially see more items from past events, such as the "Arataki's Great and Glorious Drum," being made available in Souvenir Shops in different nations. This could be introduced a few versions down the line; that way, more players will be playing the game by the time they release the items again.