This is an Excel spreadsheet which you can use as a simple camera log.  It's obviously not as extensive or sophisticated as cineBASE, which I've also published here but you should use at least something like this to keep track of the huge volume of info you need to follow on the set. 

You can just print these out, fold them and write on them on the set or you can use a spreadsheet program on a Palm Pilot.  The advantage of the software approach is your ability to search, sort and, select.  This can be a real time/life saver.