Hi guys! Those items you get from sign-in is to help you assist on the real event =p The real event is the "Assisting Event" shown below. The items you get for sign-in is to be contributed towards the "Assisting Event" to hit specific tiers for codes xD

Hope that helps! So regardless of what you get based on chance for Sign-in, they all work the same way towards this part of the event.

~Jib

Jib Edit: Extra picture below: