The Mandalorian is a big hit for Disney+, largely because of the popularity of "The Child," better known by the malapropism Baby Yoda. It's the cutest, most memorable thing we've seen in a while, but the need to keep it a secret (Baby Yoda is revealed at the end of the first episode) meant Disney couldn't have Baby Yoda toys ready to go from day one.
The only Mandalorian Lego set is the AT-ST Raider from episode four, which sadly does not come with a Minifigure of "The Child." Thankfully, Reddit user u/hachiroku24 stepped in to fill the void with an impressive custom-designed and built Baby Yoda model (complete with a floating carriage!) that's so accurate that it's actually pretty damn cute.