The guide at
http://almarsguides.com/eq/farming/1-49/icegiants.cfm may not be a great source, but they describe the IG's I remember fighting.
" ...drop Fine Steel Weapons and any where from 1 to 50pp a kill. Aside from the Fine Steel Weapons you can expect to find other valuable goodies like gems that will sell for a lot."
The average drop was 3 items and could include up to 5 items (1 or 2 weapons, 3 gems or trash) and 25-35p. It was possible, although rare, to get the 50p, 2 fs, and 3 gems.
It was also possible, and just as rare, to get just crap pages for loot and 1pp.
This is only for the IG's in Everfrost. The ones inside Perma have very bad loot.
While you're peeking in the loot table - ice giant toes used to be common off the giants in EF and Perma. When I was farming them on p99 (April / May most recently) the ig's in Everfrost didn't drop toes at all; toes seem to come mostly from Gornit in OoT.