I have recently given my RL players a very potent (IC) book (that they
stole from the Gorgon). It was a collection of notes about the
Artifacts of Cerilia. Among the most important ones to my players was
the Book of Deamons (the page was bookmarked by the Gorgon). This book
had the power to summon a Tarasque. Upon reading into the description,
they learn that it is located either in the Diesmaar area or possibly in
the Western Reaches (one PC is regent of Dauren) or the Krakenstaur. My
Rjuvik druid (with second sight) has a viewing of the tarasque standing
on top of the Krankenstaur (amoung some other negative things) and is
conivced that the book is there. They head off to recover and destory
it. Attached to thier party is an elf that accompanied them from
Tuarhievel but is very loyal to the Manslayer (who is seeking the
book). The rest has yet to occur. Oh, sorry for rambling, there, I'll
get back to my question. Does anyone know of other artifacts and where
I can find info on them? The ones I know are:

Haelyn Rampart (BoP)
Brenna's Favor (BoM)
Sidler Saddle or Stirrups thing (BoM)
all of Basaia's bloodstone (BoM)

The last two are actually those blood gems but I consider them artifacts
(since they are so rare and cannot be recrated).