I've just given the bonfire the last of 1K items and it shows as that on my achievements page. The yellow banner notification I got said - Unlocked Item Giver! Give 25 items to the Red Rreign

There's also a yellow dot on the 1K items block which is supposed to be a prize but nothing happens when I click on it to see what it is. There isn't anything special in my inventory either.

Thanks