There are also more creative, theme-based rewards. You might get to pick a “mystery gift” from a set of boxes, or try for a progressive jackpot that grows with every qualifying bet placed during the event. Sometimes prizes aren’t cash but goods like electronics or experience days. Bundles of free spins on new, seasonally-themed slots are always popular. The point is that these rewards feel distinct and tied to the time of year, which makes them more appealing than the standard, everyday deals.