Adding to what Delirious said are our missing items, everything found has been activated in the database except:
Pyrmat
Skeletal Fire Gun
Spirit Bottle
Red Apple Wall Clock
Yellow Rocking Gelert

So anything else that is "searchable" is needed. (Actually, all the MIAs are needed, but searchable ones are the only ones that exist -- except, of course the omelettes and pizzas and a few other items that are searchable but don't exist.)

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There are a few rare items for which we are also missing the descriptions and rarities. If you come across one of these, don't feel you have to wait until you get the ID# to post the info:

Advanced Kreludan Physics
Know Your Robot Petpet
Scenic Kreludan Views
The Green Grundo Invasion
Bruno (TCG) (rarity 110)
Illusens Quest (TCG) (rarity 110)
Lord Kass Amulet
Pofew
Year 9 Quiguki
Baby Kacheek Morphing Potion
Pink Lenny Morphing Potion
Darigan Zafara Morphing Potion
Pygui
Gold Tonu Morphing Potion
Jhudora Statue
Tyrannian Bori Morphing Potion
Plushie Bori Morphing Potion
Christmas Wocky Morphing Potion
Apple Moquot Lollypop

The four Booktastic Books at the top are almost definitely r100 and the rest are probably r99 but confirmation is a good thing.

Thanks.