The First Day of Christmas is John Denver
The Second Day of Christmas is Fozzie Bear
The Third Day of Christmas is Gonzo
The Fourth Day of Christmas is Robin, Kermit's Nephew
The Fifth Day of Christmas is Miss Piggy (Ba-Domp Bump Bump)
The Sixth Day of Christmas is Scooter
The Seventh Day of Christmas is The Fish Guy (Crazy Larry?)
The Eighth Day of Christmas is Rowlf
The Ninth Day of Christmas is Bunsen and Beaker
The Tenth Day of Christmas is Statler and Waldorf
The Eleventh Day of Christmas is...a mystery.
The Twelfth Day of Christmas is Kermit the Frog

The Eleventh Guy I see, but don't know his name. I think he's the janitor from the Muppet Theater. The brown guy...usually pushing a broom.

I need somebody with video of the event to verify this all for me.