Amazon is running a special promotion for those that have an Amazon Rewards Visa card. You can save 25% off selected toys up to a maximum of $50. Use coupon code TYS25ARC at checkout for the discount to show up.
Several LEGO sets are eligible but 2 sets in particular should be popular options: LEGO Star Wars Ewok Village (10236) for $200 & LEGO Mindstorms EV3 (31313) for $300. Discounts are hard to come by for these sets so grab them if you’re able to.