1. Buy enough storage containers to fill your shelves or cabinet — even if you don't need them all now. Having storage boxes and bins waiting for you will help avoid future clutter pileups. This is especially useful for storage of items you know you'll be accumulating: photos, kids' artwork and financial records, for instance.If you have children, consider purchasing slim plastic containers with lids that will fit under a bed, and/or paper art portfolios. Limit yourself to filling one container per school year, but supplement with digital photos of large or 3-D artwork that would be impractical to save.