Holidays:
New Year's:
Fairy New Year

Modern Art Painting Add-ons

SIMplicity Fashion Retail

All found here
http://simfileshare.net/folder/177284/St. Patrick's (more items are found in Royals, Peasants and Pirates - Killarney Castle):
Celtic Angel of St Patrick's Day

Celtic Green Rugs

Green Celtic Pattern Rug Recolors

Irish Clover Jewelry Set

Kaedan My Little Irish Pixie

Paige My Little Pixie Fairy

St. Patrick's Fairy

The Royal Celtic Green Wall and Carpet Collection

All found here
http://simfileshare.net/folder/177286/Valentine's:
Fairy St. Valentine

Little Devil Valentine's Fairy 1

Little Devil Valentine's Fairy 2

Little Devil Valentine's Fairy 3

Naughty Valentines

St. Valentine Unmentionables

Sweet Valentine Sleepwear

Tower of Hearts Communiy Lot

Valentine Lingerie

Valentine Sleepwear

Valentine Vase Recolors

Valentine Wall Mural

Valentine Wallpapers and Carpets

Valentine Wallpapers and Floors

All found here
http://simfileshare.net/folder/177295/