I am not sure what's behind the scenes with that newly added item... Idk how it's supposed to work and what will give you. Just placed one on my test server and got a pump shotgun with 10 blue shells. Then had the red message "You claimed today reward, come back tomorrow or something like this"...

I see this being useful outside of the Christmas period too. Possible to have it's loot drops changeable, also probably time lowered?