I feel similarly, Top Gun. I only ever found one gift, but I got blown away by Monoculus before it actually materialized.
Instead, I've pretty much backed out of the halloween event entirely. I got my Book badge thing, I got the achivements. Everything else is only available on halloween, so not really worth my time in my opinion. Unless there's anything I didn't know about, that is.
In other news I may try to make a TF2-themed car in Forza 4. Any suggestions (car model, icons, color, etc)?