Best New Lego Sets September 2026: Top Picks from SpongeBob to Batman

Ready to clear some shelf space? September 2026 is a Lego goldmine, with sets from Star Trek, SpongeBob SquarePants, Harry Potter, Batman, and more hitting stores. But with so many options, where do you start? Let's break down the best new Lego sets this month so you can prioritize your wallet.

First up, the one everyone's talking about: the SpongeBob SquarePants set. It's a colorful, nostalgic build that brings Bikini Bottom to life. If you're a fan of the show, this is a no-brainer. But if you're more into space, the Star Trek sets are finally here, and they're worth every penny. The Enterprise is a stunning display piece, but even the smaller ships are packed with detail.

Harry Potter fans aren't left out either. There's a new Hogwarts castle expansion that fits perfectly with previous sets, and it's a must-have for completing your collection. And for Batman lovers, there's a new Batmobile that's sleeker than ever. It's a quick build but looks fantastic on a shelf.

What's really cool about this month is the variety. You've got something for every taste, whether you're into sci-fi, fantasy, or just want something fun and colorful. The Star Trek sets are a particular highlight for me—they've been a long time coming, and they don't disappoint. The SpongeBob set is also a great pick for a younger builder or anyone who wants a dose of nostalgia.

But let's talk value. Some of these sets are pricey, so it's worth thinking about what you'll actually get out of them. The Batman set is a quick, satisfying build, perfect for a weekend afternoon. The Harry Potter expansion adds a lot of playability if you have existing sets. And the Star Trek sets are more about display—they're not as play-focused, but they're gorgeous.

If you're on a budget, the smaller SpongeBob set or the Star Trek shuttle are great entry points. They're affordable and still offer that Lego magic. Plus, they make great gifts for the fans in your life.

So, what's your priority this month? Are you grabbing the SpongeBob set for the nostalgia, or are you all-in on Star Trek? Let us know in the comments—and happy building!