12 Days of Christmas

Make a new list for the 12 Days of Christmas song. You could try a theme like Star Trek, classic monsters, Dragonball Z, food, cars ...

Here's the original:

On the twelfth day of Christmas, my true love sent to me
Twelve drummers drumming,
eleven pipers piping,
ten lords a-leaping,
nine ladies dancing,
eight maids a-milking,
seven swans a-swimming,
six geese a-laying,
five golden rings;
four colly birds,
three French hens,
two turtle doves
and a partridge in a pear tree.

When you're done, there are several parodies listed toward the bottom of the Wikipedia article.