I saw the other thread and it reminded me to look up the old link for requesting free loads of different labels from avery - and it still seems to work!
You can order 6 different types at a time. Just type some nonsense into the boxes that require you to input a product codes to get a nice pop up box with all the codes and categories.
I know this has probably been posted before - but it is always good to have a reminder, no? :)