Item secondary effects?

[Coga]

Do any of the items from the mall have secondary effects? 'Cos the Wings (both sets) and the Tiara etc. seem to be rather expensive for so little gain.

[Wraith_Magus]

They pretty much look cool more than they are meant to be powerups.

As far as I know, there are no beneficial side-effects to the items, and nobody even notices or comments on your wings or halo or whatever. So they're pretty much just for looking cool in your yearbook.