As they are want to do, Jimmy Fallon and The Roots played a Christmas classic on children's musical instruments, and invited a few children (One Direction) to join them. It sounds a little bit like a kindergarten cacophony, but it is great to see the complete list of instruments at their disposal. From the video description:
Jimmy Fallon - wood block, Casio keyboard
Harry - kazoo, bass drum
Niall - banana shaker
Louis - tambourine
Liam - coconuts
Zayn - triangle
Questlove - hand clackers
Mark Kelley - Fisher Price drum, kazoo
Kamal Gray - xylophone
James Poyser - melodica
Captain Kirk - ukulele
Tuba Gooding Jr. - toy saxophone
Frank Knuckles - bongos
Black Thought - sleigh bells
Side note: I had no idea The Roots added a guy named Tuba Gooding Jr. (real name: Damon Bryson) to perform with them on The Tonight Show.
It's also notable that Liam from One Direction is on the coconuts, which begs the question of how coconuts got to New York City, it being a tropical fruit. I mean, I get that swallows migrate and could grip a coconut by the husk, but it's a simple question of weight ratio. A five ounce bird can hardly carry a one pound coconut.
Hmmm...but supposing two swallows carried it together. They'd use a standard creeper held under the dorsal guiding feathers.