I have no idea what you are like - your preferences, but I'm with MMM - I wouldn't bring anything with you that you can't carry. Deodorant being the exception. Toothpaste- Aquafresh is readily available if you like that one.
There are lots of Sayonara sales here - people who come, stay for a year and then leave. You can get most stuff you need here and it is usually pretty good. That's what I did coming back this year - I bought my tv, washing machine, fridge, etc through sayonara adverts. Just make sure you check what you're getting. It may not be your cup of tea but.... it's an idea. For a clue about prices check out this link
http://metropolis.co.jp/classifieds/...on=home&pid=31