Here is the official explanation of what the Activity is, which can be found on the same page where builders should share their submissions:
With Spring in sight, take your bricks outside and see how you can integrate them into the world. Maybe a ladybug house in the shape of a ladybug, or a brick built bird sat in a tree!
This is part of a series on LEGO Ideas that gives little tasks for builders to get involved with – there are no prizes, they are just a way to get involved with building something quick for fun. Each challenge is intended to be something quick and fun, unlike the more in-depth building required for a competition or product idea.
The deadline for this Activity is March 10 at 10.00am CEST.