I really dislike those long pins, but this is such a great idea, I'm pinning it anyway. Easy Cardboard Box Organizer. Shown here, it's holding shoes, but you could store anything: magazines, files, craft supplies, etc. I would also cover or paint it rather than leave the plain cardboard.
Porta-retrato perolado - DIY - Faça você mesmo | Creative
D.I.Y. MOLDURA REVESTIDA COM MIÇANGAS
Cute and easy
55 Genius Storage Inventions That Will Simplify Your Life -- A ton of awesome organization ideas for the home (car too!). A lot of these are really clever storage solutions for small spaces.