On maintenance of January 25th, item giving boxes are getting a full scale update. Items affected are the Old Purple Box, Old Blue Box, Present Box, and Treasure Box.
Old Blue Box & Old Purple Box
The old blue box and old purple box is updated with many of the new world and dimensional gorge items, including those dropped by the MVP monsters. Exclusively available in Old Blue Box (OBB) and Old Purple Boxes (OPB) is the Balloon Hat[1].
Illustration: Balloon Hat[1] (OPB & OBB), Bloody Branch (OPB), Treasure Box (OPB & OBB), Diabolus Maneaut[1] (OPB), Valkyrja’s Shield[1] (OPB & OBB), Coin Holder (OBB).
Note: Balloon Hat on iRO is called the Tam[1]. On jRO, the headgear reduces aftercast delay by 1% per refine.
Present Box
Got a wedding coming up? Present box now contains items related to weddings. It also contains many new taming items, pet accessories, special items like Valhalla’s Flower, and many types of special stones and ore.
Illustration: Wedding Dress[0]/Tuxedo, Fancy Apron, Valhalla’s Flower
Jewelry Box
Jewelry Boxes are now updated with new kinds of accessories, including those from the new world and dimensional gorge.
Illustration: Ring of Resonance[0], Diabolus Ring[1], Bradium Earing[1]
Other
The website also is kind enough to provide example places and monsters to obtain these boxes. I won’t be translating these, but its here just to show the information that is provided.
Source: http://www.ragnarokonline.jp/news/information/notice/itemboxchange2011.html