currently active codes and minions
Wind up enterprise: art of eorzea ends dec 31st 2015
Wind up bahamut : a realm reborn sound track ends dec 31st 2015
Mog attire. ends april first
PS4 update ends April first
Ps4 collector codes (arr) should still be open until sec 31st 2015

Codes that no longer work
any pre-order code for ARR ended dec 31st 2013
the collector codes for ARR (on my leaflet it said it ended dec 31st 2014 this may be different)
Wind up Dalamud: Before metior soundtrack ended dec 31st 2014
and finally any and all 1.0 codes ended in 2011 when the servers were shut down

Future codes' bonus
Heavenward's pre-order and early access (used for june 19th)
heavensward collector items (physical presumed leaflets Used for june 23rd)

this is the basic list of minions and bonus' and expression dates :3 hope this helps with anyone with codes and are unsure of when they end