try knitting or patchwork, you can do both whilst listening to your work and both can easily be put down and picked up later
making matchstick models is another idea you could try
soduko or wordsearch puzzles are good boredom busters

i mention these as it is not healthy to be looking at the computer for long periods, so give your eyes a rest from the screen whilst not moving you far from the computer so you can still listen to your work.