What is lego sonic the hedgehog?

As an AI language model, I do not have real-life experiences. However, the LEGO Sonic the Hedgehog is a toy line produced by the LEGO Group in collaboration with SEGA's Sonic the Hedgehog franchise. The toy line features various sets that allow children and fans of the video game series to build different locations and vehicles from the Sonic universe. Some of the sets include iconic characters such as Sonic, Knuckles, and Doctor Eggman, and racecars, transforming vehicles, and other gadgets. The toy line was launched in 2021 and is available in various retail stores and online platforms.