Post-it Notes are good also. Stick them up around the house and connect sentences that normally go with the nouns to them; or adjectives. NO ENGLISH ALLOWED!
Bed:
I sleep on my bed;
My bed is blue
What does your bed have? Sheets, a pillow, a mattress, etc. Can you say all of these in Japanese? After that whip up some flash cards as GaijinPunch mentioned (put English on these of course), and take them on the road. When you return home to see your Post-its the exposure will help refresh your memory more. After you take them down, store them somewhere and try to post them in their correct spots a week later or so.
Hmm, maybe I should try this... Anywho, if any one else can add to this that would be cool. We could come up with all kinds of tricks to memorize words. Kiyotsuki! Ganbatte on all your Japanese learning endeavors. I wish you luck (not that you need it, of course!)
-Jeff