First, AICN posted a pic of some items from a Japanese trinket company that happened to show a crystal skull from Indiana Jones and the Kingdom of the Crystal Skull. You may consider the pic spoiler material only because things can be inferred from what you see. Heck this pretty much just confirms what we have been speculating about from previous posts, but we want to be friendly to those trying to stay spoiler free...On the other hand, if you don't want to know, why'd you click on the story? :) Click here to see the crystal skull trinket.
As if that wasn't cool enough, MovieWeb then posted a pic of the actual crystal skull from the film. Click here.
Thanks to Ryan P., Suresh ("Jedi39")and "Jedi Maximus" for the heads up.