Santa Jolly Elves is not a widely recognized brand or product, so I don't have specific information on it. However, if you are referring to a general concept related to Santa Claus and elves, such as in holiday-themed stories or products, it’s common for various Christmas-themed toys and sets to have add-ons or supplemental pieces, sometimes including items like LEGO bricks.
If you have a specific LEGO Christmas set in mind or want to know if there are modular additions available for a themed set, it would be best to refer to the official LEGO website or authorized retailers for the latest information and available options.