It's been around for awhile now, and in-need to a modern re-interpretation from the collective forum brains of SH.
The Original 12 Days with the original religious meanings in brackets:-
1 True Love
(God)
2 Turtle Doves
(Old & New Testaments in the Bible)
3 French Hens
(Faith, Hope and Charity)
4 Calling Birds
(The Four Gospels)
5 Gold Rings
(First five books of the Old Testament)
6 Geese a-laying
(Days of Creation)
7 Swans a-swimming
(The Seven Sacrements)
8 Maids a-milking
(The Eight Beatitudes)
9 Ladies dancing
(Fruits of the Holy Spirit)
10 Lord's a-leaping
(Ten Commandments)
11 Pipers piping
(The faithful Apostle's)
12 Drummers drumming
(Doctrine's in the Apostle's creed)
so, what's your 'modern' twelve???