During special occasions like Christmas, you can engage your website visitors by offering thematically coherent participation actions. There are plenty of opportunities and ideas to get your audience involved. WordPress site owners, for example, could add a plugin to create a WordPress advent calendar and embed it on their website. This can be combined with a sweepstakes, a raffle and/or a Christmas quiz. Naturally, none of these options are restricted to the Christmas season. Prizes for raffles could include small gifts, exclusive discounts, and coupons for free shipping.
If your website has its own forum, make use of it. Encourage your users to upload Christmas photos and posts on a particular theme and reward the most interesting ones with a special award or offer. Or how about a scavenger hunt? You could hide a surprise across random pages of your website for every day until Christmas. Post relevant hints to find them on your forum beforehand.
Minigames are just as welcome. Users could count flying reindeer, catch presents with a sack, or steer a sleigh past obstacles. There are numerous games that can be embedded into a website using iFrames. Among them, for example, “Christmas Chain - HTML5 Game” or “Game Christmas Furious”, both of which are available for purchase on Evato Market at CodeCanyon.