Seeing this on Everly’s advent calendar thread reminded me I had written one a few years ago. 
On the first day of Christmas, my bunnies gave to me A Bruno in a pear tree.
On the second day of Christmas, my bunnies gave to me Two floppy ears and a Bruno in a pear tree.
On the third day of Christmas, my bunnies gave to me Three bonded bunnies, two floppy ears, and a Bruno in a pear tree.
On the fourth day of Christmas, my bunnies gave to me Four buns a’binking, three bonded bunnies, two floppy ears, and a Bruno in a pear tree.
On the fifth day of Christmas, my bunnies gave to me FIVE HAPPY HOPS!!!! Four buns a’binking, three bonded bunnies, two floppy ears, and a Bruno in a pear tree.
On the sixth day of Christmas, my bunnies gave to me Six raisin treats, FIVE HAPPY HOPS!!!!!! four buns a’binking, three bonded bunnies, two floppy ears, and a Bruno in a pear tree.
On the seventh day of Christmas, my bunnies gave to me Seven paper rolls, six raisin treats, FIVE HAPPY HOPS!!! four buns a’binking, three bonded bunnies, two floppy ears, and a Bruno in a pear tree.
On the eight day of Christmas, my bunnies gave to me Eight lettuce leaves, seven paper rolls, six raisin treats, FIVE HAPPY HOPS!!! four buns a’binking, three bonded bunnies, two floppy ears, and a Bruno in a pear tree.
On the ninth day of Christmas, my bunnies gave to me Nine buns a’flopping, eight lettuce leaves, seven paper rolls, six raisin treats, FIVE HAPPY HOPS!!!! four buns a’binking, three bonded bunnies, two floppy ears, and a Bruno in a pear tree.
On the tenth day of Christmas, my bunnies gave to me Ten cardboard tunnels, nine buns a’flopping, eight lettice leaves, seven paper rolls, six raisin treats, FIVE HAPPY HOPS!!!! four buns a’binking, three bonded bunnies, two floppy ears, and a Bruno in a pear tree.
On the eleventh day of Christmas, my bunnies gave to me Eleven wiggling noses, ten cardboard tunnels, nine buns a’flopping, eight lettuce leaves, seven paper rolls, six raisin treats, FIVE HAPPY HOPS!!! four buns a’binking, three bonded bunnies, two floppy ears, and a Bruno in a pear tree.
On the twelfth day of Christmas, my bunnies gave to me Twelve little kisses, eleven wiggling noses, ten cardboard tunnels, nine buns a’flopping, eight lettuce leaves, seven paper rolls, six raisin treats, FIVE HAPPY HOPS!!! four buns a’binking, three bonded bunnies, two floppy ears AND A BRUNO IN A PEAR TREEEEEEEEEEEEEEEEEEEE!!!!!!.