Here are a couple of things that might be interesting for a little quiet time over the holiday period:
1.
A golf game where you have to shoot a charged "ball" through a combination of electric and magnetic fields, aiming at a "hole". Once the magnetic fields are on, it's excitingly non-intuituive. NB. requires Flash.
2.
A simulation of gas particles in motion under gravity. You can adjust their sizes and masses, and the system temperature, and then watch how the move, and their height and speed distributions.
