Ice Cream and Violins Day 
Normally we like to send folks scurrying off to the kitchen with a recipe to try, but we can get back to normal next week. Instead, lets all celebrate with a scoop or two and some good tunes to mark National Ice Cream and Violins Day.
I swear I’m not making this one up. Dec. 13 has long been acknowledged as National Violin Day, and a number of freakishly talented musicians have marked the occasion by attempting to set a speed record by playing “Flight of the Bumblebee” at paces that cause most metronomes to melt. The current champ, rock violinist Ben Lee, scorched through more than 15 notes a second on his way to a 54.24 second performance in 2011.
Some very clever people also noted that Dec. 13 happens to be the day that inventor Italo Marchiony submitted an application to the US Patent Office for a device that molds ice cream cups. And because we live in an era where seemingly incongruous happenstances are often subjected to the mashup treatment, a new holiday has born, with online references to the marriage dating back to at least 2004.
http://foodies.blogs.starnewsonline.com/33672/the-meal-ice-cream-and-violins-day/
Tic Tac Toe Day 
Tic Tac Toe Day is coming Saturday, 12/13/14. This is the final time this century when the date is comprised of three consecutive numbers. (On the other side of the pond, they call it Noughts and Crosses Day, but they write their dates a bit differently and enjoyed their final one last year.)
http://tictactoeday.net
Gingerbread Decorating Day 
Create a sweet street scene by decorating paper-maché houses with icing and candy. Complete the tableau with faux snow, a lollipop forest, a gumdrop pathway and peppermint-patterned plates.
Materials
Paper-maché house
Scrap paper (newspaper or an old grocery bag)
Brown spray paint (like Rust-Oleum Painter’s Touch Ultra Cover Gloss in Kona Brown, about $6 for 12 oz; Michaels.com for stores)
1 lb confectioners’ sugar
3 Tbsp powdered egg whites (such as Just Whites, available in the baking aisle of most supermarkets)
6 Tbsp water
Electric mixer
Piping bag (ours had a #4 tip)
Pointed offset spatula or butter knife
Candy (like Mike & Ike, Jujubes and Wonka Exceptionals Fruit Jellies)
http://www.womansday.com/home/craft-ideas/christmas-craft-no-bake-gingerbread-house-113150
Day Of The Horse 
The first National day of the Horse was recognized in congress in 2004. This event was created to remind congress and others what this day and the horse represents. Congress needs to finally ban horse slaughter and pass the SAFE Act and stop the roundups of wild horses.
http://www.habitatforhorses.org/national-day-of-the-horse/
International Shareware Day 
A day to take time to reward the efforts of thousands of computer programmers who trust that if we try their programs and like them, we will pay for them. Unfortunately, very few payments are received, thus stifling the programmers efforts. This observance is meant to prompt each of us to inventory our PCs and Macs, see if we are using any shareware and then take the time in the holiday spirit to write payment checks to the authors. Hopefully this will keep the shareware coming.
http://mcg.metrocreativeconnection.com/publish/sections/calendar-details.php?International-Shareware-Day-2382