Particle Simulation

Using particle emitters and different fields, I simulated different occurrences. Snow falls outside as a fire burns in the fireplace, smoking slowly.
The snow is made using sprite particles with an alpha I made in photoshop that emit from a plane above the building.  There is a gravity field above that that pushes the "flakes" down.  A turbulence field is also affecting the particles to make them appear to be blowing in the wind.
Inside, there are two other particles; the fire and the smoke.  The smoke is created from emitting cloud particles from a plane hidden in the logs.  It has a uniform field attached to it to push the smoke  up.  The fire particles are created by an object emitter attached to all of the logs.  The particles are all multi streak particles that have a color ramp on them.  The same uniform field that is attached to the smoke is also attached to the fire, but the fire also has its own turbulence field to help push it around more realistically.

Rigid Body Demonstration

Using different fields and constraints, I simulated the affects of gravity and momentum on different objects.  A gravity field is attached to all objects that move in this scene.  Using hinge and nail constrains, I was able to have the hammer swing and hit a ball.  The ball affected a few different objects as it flies away. Hinge constraints hold the board in place as it spins as well as holding the mallet and the cup. Two springs are attached to the doors of the next part that would swing back up and down if they were still in the camera view. Two invisible planes help keep the diamond in place as it falls.  A uniform volume field is placed down the shoot to help push the diamond faster into the wheel.  A vortex field is applied to the wheel with an initial state set before the diamond hits.  After it spins the spring that launches the heart is triggered.  The spring has a spring and hinge attached to it.  The handle his by the heart just has a hinge and gravity applied to it. The three spinning wheels are just one wheel with a spin attribute keyed that was then duplicated to create the ending scene.