During cold days when there is no chance for a walk and no mood to study or (worse!) mark assignments, I take out my toolbox with beads, wire and pliers and work silently.
The world drifts away for a while, until my hands produce something nice, and I start walking around the house, boasting about my new piece of art to anyone present ;)
A mad side effect: pairs of earrings and bracelets have piled up in my drawers. This of course made me grip the camera and produce loads of photos so that I can advertise and get rid of the shiny stuff :))