Children finish school on ), which is specially made for the purpose, the boys form a group and walk through the village, rattling their rattles vigorously, so the noise can be heard from afar.
The meaning of the rattling is to chase away Judas.
The most common designs are probably geometrical patterns, but you can also see flowers, leaves or snowflake patterns in a whole range of colors.
There are no limitations to creating pretty, colorful eggs.
"There is a huge price war here in the Czech Republic, because there are quite a few suppliers of software," group CEO Stefan Fillibeck told CNBC, adding that the Czech Republic had carved a niche for itself an as "agile" technology developer, with talented programming and software developer graduates.
Czech central banker: We need ECB easing The Czech Republic benefits from universities with strong maths, engineering and information technology faculties dating back to its communist era, when the Soviet Union was mindful of the skills needed to the fight the Cold War.
Spicar said information and communication technology (ICT) government policies in particular are a real problem, as is the severe lack of government investment. I spoke to a CEO of Czech startup and a recent panel and his words were 'if you can make it here, you can make it anywhere,'" he added.
Different materials can be used, such as bee's wax, straw, watercolors, onion peels, picture stickers.
Boys would whip girls lightly on the legs and possibly douse them with water, which had a similar symbolic meaning.
An Easter carol, usually asking for an egg or two, would be recited by the boy while whipping.
One such institution is Prague based Charles University, one of the oldest universities in the Europe which now has an internationally recognised reputation in information technology.
"Here we have a quite an education level, there are several tech universities here and very creative people, not bound in that old fashioned way, so we are doing software development in a very different way to how it is being done in Germany," he added.