See also this GSR Christmas fanfiction list

A Christmas Eve to Remember   Smrozier   K

A Very Geeky Christmas Story   Jane Doe   T

A Very Grinchy Christmas   GroversCSI   T

Bids   Gibby   R (Sequel to Dibs)

Breaking Boundaries   Karin1   T (Sequel to Christmas Eve)

Candy Canes and Cockroaches   Grissom (Dragon86)   K

Christmas Cheer   AbisiansBlood   K

Christmas Eve   Karin1   K

Christmas Fever in the Rockies   Cindy   K

Christmas Printing Projects   Not Exactly Blond   G

Fairytale in Las Vegas   Forensicsgirl   T

Geek Jaunt   Laura Katharine   T

Geeky Kind of Christmas   VanillaBug   M

Home Sweet Home   Kristy87   M (Sequel to the Favor)

Holidays   Willowaus   K (See series)

If Your not the one   Amanda Hawthorn T 

July   Moggie   K

~ Learning Christmas   VR Trakowski   PG

~ Miracle on Grissom Lane   Laura Katharine   PG

Mistletoe and Wine   Amanda Hawthorn   T

Mistletoe Mania   Summer Reign   T

~ Nowell   VR Trakowski   G

Paper and Tin Foil   Caidreabh   K

Rituals   Midnight Caller   T

Rumnog and the Perfect Gift   Sweet-surrender5   K

Sara’s Christmas Wish List   Bellabrew   M

Sara’s Smile   LSI   G

~ Scheme, A Holiday Drabble   Laura Katharine   PG

The Christmas Party   Irish Dachsie   NC-17

The Favor   Kristy87   M (Sequel is Home Sweet Home)

~ The Heart of the Woods   VR Trakowski   G  AU

The Nine Lives of Christmas   Grissom   K

The Kringle PO   Cincoflex   PG

The Spirit of Christmas Presents  Laura Katharine   K

There’s Something About Christmas   Pesi   K

* True Blue Christmas   Wobbear   K

Vischio   VR Trakowski   PG

What to Give a CSI for Christmas   Unspoken Loves   M