Ok, backpeddling a bit to the Firebase: Vancouver "easter egg" items. If all the items are assigned holidays, and corrisponding months, you get 6 consecutive months starting in October, as such:
For the purposes of the following list, the Strawberry Chocolate Cake goes to November.

Jack-o-Lantern: Halloween, October 2012

Starwberry Chocolate Cake: Thanksgiving, November 2012

Gift: Christmas, December 2012

Champagne/Serrice Ice Brandy/Alchohol: New Years Eve/Day, January 2013

Heart Shaped Box of Chocolates: Valentines Day, February 2013

Easter Egg Basket: Easter Sunday, March 2013
As it is, all six of these items could just be fun "easter eggs" the team put in for no reason other than it would be cool. But, if October rolls around with some kind of announcement or event from Bioware, we may be on to something. Six consecutive months of announcments/events/DLC? Not much of a stretch.