I read your post to my DD who is now 8 (we celebrated her 6 & 7 bdays in the parks)
"My favorite thing was a girlie thing" (BBB)
<yeah! I didn't know that was a favorite memory>
I asked her "so how about a pirate sword?"
we vote for him getting to pick out a special souvineer to bring home. After a complete look around the shops of course.
Agree with the PP about the birthday cake party thingie, total waste.
The great thing about this age is his favorite thing might be:
riding the omni bus
watching the ducks at Hungry Bear
Flik's flyers in Bugsland
cotton candy (shared with mom of course

)
the hotel pool
Pixar parade
Disneyland Railroad (dinosaur section)
Enjoy!
and snap some great pics to revisit the memories