It's always good to be reminded, even when things are pretty obvious. Brokelyn has a useful piece about what to buy and what to avoid at 99 cent stores. Since we have MANY in our swath of Brooklyn, I figure it's a good link to pass around.
My most recent 99 cent purchases include a shower curtain liner, bubbles in some sort of "fun" shaped container, and a mailing envelope.
What do you find most useful (or scary) about 99 cent stores in Sunset Park?