In Reply to: Take full suitcases posted by Lea on Friday, 21. January 2011 at 17:31 Bali Time:
you can also go to Supernova in south Kuta.
This is a "local" supermarket that has all the toiletry items and stationary items that you may want to put together, and at very cheap prices.
You can also get the self seal bags there for packaging.
However, ensure that you have plenty of time as it can take an eternity for the checkout to individually peel stickers and scan say 50 of everything.
If you are taking to a school or similar, make sure you give to each individual child, as it is not unheard of for teachers / guardians to take and control donated goods for their own purpose.