In countries where Christianity is the predominant religion, Easter is generally celebrated as a public holiday and always on a Sunday. As part of that celebration, 'Easter eggs' are decorated and given out to celebrate the holiday. Perhaps the oldest tradition uses dyed and painted chicken eggs, and more recently substitute eggs made from chocolate, or plastic eggs filled with candy to replace the chicken eggs.

Easter eggs are a popular symbol of new life in Poland and other Slavic countries, and the eggs are often adorned via a process something like batik (known locally as pisanka) to create intricate, brilliantly-colored eggs.

CGTrader, a 3D model marketplace for computer graphics and 3D printing, is putting designers on notice of their Easter 3D Printing Challenge. The company, based in Vilnius, Lithuania, was founded in 2011 by 3D designer Marius Kalytis and Angel Investor Donatas Aksomitas.

The Easter 3D Printing Challenge runs from March 31, 2014, to May 5, 2014.

When uploading, check the "Easter 3D Printing Challenge" box to make sure your model is properly tagged and counted as a challenge entry.

So what kind of entries have a shot at glory?

Eggs, napkin holders, vases, rabbits, chickens, various home decorations – just about anything which might be reminiscent of the Easter tradition is fair game.

Keep in mind that joining this challenge means you agree that your rendered scene or printed model's image might be used by sponsors for non-commercial marketing purposes, and you can enter as many models as you can create. If you upload more than 10 individual models, you're automatically eligible for the Portfolio category prizes. The challenge is open to everyone, including teams, legal entities and people from all over the world, and participating in the challenge is free of charge.

Entries must be original and not derived from other works, and that's about it for the rules of the game.

The contests:

Best Easter 3D Printable Portfolio

The award will be given for the best printable Meme related models uploaded during the challenge period, and the winner will receive:

An assembled Pirx 3D printer
Filaments from Zatopa
Filaments from RepRapWorld
3D printing your model of choice by 3D Print UK
CGTrader T-shirt

For the two runners-up...

50 USD gift card to shop on Sculpteo
Filaments from Zatopa
Filaments from RepRapWorld
3D Printing your model of choice by CGTrader
CGTrader T-shirt

Best Easter 3D Printable Model

The award will be given for the best printable Meme related model uploaded during the challenge period, and the winner will receive:

400 USD from CGTrader
100 USD gift card to shop on Sculpteo
Filaments from Zatopa
Filaments from RepRapWorld
3D Printing your model of choice by CGTrader
CGTrader T-shirt

For the two runners-up...

100 USD gift card to shop on Sculpteo
Filaments from Zatopa
Filaments from RepRapWorld
3D Printing your model of choice by CGTrader
CGTrader T-shirt