In the LEGO Movie 2, Emmet is inviting Lucy to his dream house. Similar to a Tardis, it is bigger on the inside than from the outside. But when we get to see the backside of the house, it becomes clear that there is a full size version that is different from the set 70831. I too several screenshots and tried to assemble this full size version of Emmets house based on the shots from its rear side.
The house can be opened up by removing half of the roof and by opening up the other half. We have the famous couch and the double decker porch swing. Here are some screen grabs from the movie and their MOC counterpart.
This is simple Mars Rover model using two LEGO Mindstorms EV3 and a total of eight motors. The two EV3 are daisy chained and the model can be controlled using the EV3 IR Remote Control. The model uses the rocker-bogie suspension system including a differential in the middle axis. The two EV3s are suspended and remain horizontal in any position. There are much more complex Mars Rover models already available using many more Mindstorm bricks. My design goal was to keep it simple and experiment with the rocker-bogie suspension system. The principles works, but there is a bit too much flexibility in the model.
The 3D model and the building instructions are available for LEGO Digital Designer. The parts list and instructions are also available at Rebrickable.