Some guy's website, maybe mr. Hall's. It also had a bunch of netbooks like the book of witches and others. I was directed there by someone referencing it on enworld and providing the link but don't have it on my work computer to reference it myself.
i found it thanks... i would not want my players to use these but they could be fun to throw at them. I would like to find stats for a half\goblinoide but i don't have the Arcanis book so i will just have to look around uless someone can help me out...
Mongrelfolk in 3rd edition are described and depicted as mostly mixed breed goblinoids though the rules mechanics support them being descended from humans, elves, dwarves, haflings, goblins, orcs, &c.
Book of Beasts by Robert J. Hall (a free huge 3.5 monster collection pdf) has a few goblinoids including winged scout ones. Your players have probably not seen anything from in that book.