(well, not actually Pumpkin, we used her real name)
“Happy Birthday Pumpkin!”
At the end of the party, I thought the kids could “free play” until picked up, but you put 7 little boys in super hero capes and the play gets rowdy really fast. So I pulled a few old YMCA camp counselor games out of my hat and the kids enjoyed those games as much as the uber-organized ones.
On the fly games:
Freeze Dance (always a hit at our house)
Mingle, Mingle, Mingle (too hard to explain)
A version of Mother May I using letters in their name.