We know Thanksgiving hasn’t come and gone yet — let alone Halloween — but getting those Advent calendars in now is still a great idea. It’s simply smart buying. They debut early, the demand is low and they’re frequently on sale waaaayyyy before it even starts feeling like December.

For the uninitiated, Advent calendars count down the days to Christmas and involve opening a new door or compartment each day to unveil a tiny present. In the case of these Lego Advent calendars, those small gifts are themed mini figures and micro builds.

As for Lego ones: They’re super popular. The brand recently released six sets, and a few (like Minecraft) have already completely sold out! According to Amazon, over 20,000 Star Wars calendars alone were purchased in the last month, so we can’t imagine these will stay in stock for long. Grab your favorite deal below — bonus points if it’s on sale — and get ready to count down the days to Christmas.