List of usable items:
--Custom TM
--4 Uncommon Items to share between charries, but no more than two to a char
--10 Berries to divide as you see fit
--5 Levels to divide as you see fit
--3 TM/HM (not egg/tutor) moves to divide as you see fit
--1 Rare Item
--1 Super Rare Item

These items are from
Newbie Promo(Custom TM)
Year 2009 Promo(4 Uncommon Items)
Month of June Promo (Berries, levels, TM/HM, and Rare Item)
Eclipse's B-Day of Awesomeness! (Super Rare Item, levels)

List of all Competitions/Promos I've got stuff from:
Newbie Promo
Year of 2009 Promo
Eclipse's B-Day of Awesomeness!
Month of June Promo

List of all things I've ever got from Competitions/Promos
--Custom TM
--4 Uncommon Items to share between charries, but no more than two to a char
--10 Berries to divide as you see fit
--5 Levels to divide as you see fit
--3 TM/HM (not egg/tutor) moves to divide as you see fit
--1 Rare Item
--1 Super Rare Item
--10 split levels OR 7 levels to one char