For the first one it looks somewhat like one of the FeeCo depot trains. I'm don't think it is though, but it definately is FeeCo styling in the concept art. Which means it is from Abe's Exoddus. The image says either "Gargoyle detail outside track supports" or "Gargoyle detail ??? train track supports" from what I can make out. So perhaps it is part of the railing that the trains run on. I'd need to go and watch the FMVs to determine which is is from however.
I have no idea with the second one.
For the last one ... is it to do with the Lorne-o-rama board that Justin took a photo of on the Odd Tour?
Abe Babe...
Edit: I noticed Peter got the last one anyway... but I'll still keep the image here! 