I’ve gathered books, magazines, and organizing and decorating products that are super awesome into one spot on my Amazon store. I’ve personally used and loved everything that I recommend here, and I’ve always been completely happy with Amazon’s customer service.
The Container Store
The mothership. Can be pricey, but the online reviews will steer you in the right direction.
Target has stepped up its container game lately, and has tons of options.
Bed Bath and Beyond
Good for closet stuff, and better if you’ve got one of their ubiquitous 20% off coupons.