We keep our paperwork in a plastic portable hanging file holder (11 1/2 high by 13 inches wide by 11 inches deep). Our system is set up for a year, separated by the month. We picked this method because in case of an emergency (fire or evacuation), we can grab the entire file by the handle and go.
We keep ours in a cupboard where its can't be seen however I have found that these files fit nicely in a wicker floor basket which you can find at garage sales or discount stores. I've placed folded crocheted blankets on the top so it looks like the basket is holding blankets. As an added bonus, my cats use it as a bed.
Officially Recognized Stretchpert in Stages of Life