Lego isn’t exactly a cheap hobby, but it’s definitely worth the expense for the chance to build things with family and friends. Luckily, Black Friday offers deals for the kid in all of us, with some great sets up to 40% off. I’m thrilled to see some of our favorites on sale, including Lego D&D Minifigs, the Lego Millennium Flacon and the Lego Perseverance Rover. If you’re looking to expand your Lego collection, we’ve highlighted some of the best deals below.

Before you go shopping, though, there’s one thing you should know: There are plenty of deals at Amazon and Best Buy, but you’ll get rewards if you shop through Lego and be part of the free-to-enter Lego Insiders club. This gives you priority access to new sets and discounts. Plus, you collect points that you can redeem for sets you can’t get anywhere else. And now, members can get double points on all purchases made through December 2.