While playing a Storm of Swords recently with three friends of mine I realised that we were not going to have enough time to finish the game before I had to leave.
Afterward I created this Excel spreadsheet to help in tracking the pieces and cards. By using this sheet my friends and I were able to record where pieces were at on the board and what cards had been played.
Now we are able to resume a game two or three weeks later rather than completely start from scratch.