Can't Find Most Of My Old Event Items

So, a loooooong time ago, I stored my event items such as the Pitchfork, Lady's Yukata and most stuff from back then. Unfortunately, I can't find any of those back.

I checked the NPC in San d'Oria for event items, I checked the 3 scenario moogle slips and all 4 options barely have any items stored in them. I can't even find my Dream Hat.

The problem is, I'm 1000% certain that I have never dropped ANY of those items. So what I'm wondering, is there another way to store those that I may have forgotten?

I remember storing everything one day because it was destroying my inventory, but it's been so long that I can't remember if there is another option.

Please send help.

EDIT:

Well, that was easy, it was on a mule.
I was thrown off by BG's description being "Not sendable" yet "POL sendable", there shouldn't be both.

//findall xxxx (windower addon) or in game /itemsearch xxxx (xxxx = name of item you searching), Other than being in delivery box it should give you a result.