Ageha - No. You aren’t able to receive a novelty item if you shop online. You have to go to a physical store to get it.
Are you talking about this? Since the banner is still up, I would assume they still have stock, but I don’t think it specifically says what the novelty item will be. (Someone who can read all of that can correct me.) I doubt it will be the Sweets thermos and handkerchief that the stores are currently doing though.
Emiii - It’s impossible for us to know for sure. I bought one earlier this month, but each store has different stock. Since they’ve been running some really good sales in July and trying to make room for the Autumn stuff that should release at the end of the week, I couldn’t guarantee that any particular store would have it. I would just call before you go.