14. Acid-free, archival Havana boxes (shown) store and protect snapshots and feature windows that allow you to label what’s inside.*
To Buy: $30 to $36 each, www.kolo.com.

15. Slip-on Solid Shelf Dividers keep stacks of shirts and sweaters tidy and can be repositioned.*
To Buy: $7 for two, www.containerstore.com.

16. Hang a steel Commercial Grade Extra Closet Rod by Richards Homewares from an existing closet rod and double your space, then arrange clothes by use or season.*
To Buy: $15, www.organize.com.

17. Designate one shelf in a utility or linen closet for party essentials, such as candles, place cards, napkins, vases, and the like.

18. The Battery Rack organizer holds everything from AAAs to nine-volts and comes with a tester, so you’ll know which ones are fading fast. Tuck it in a kitchen drawer or mount it to a wall.
To Buy: $20, www.containerstore.com.

19. Attach a piece of corkboard to the inside of your linen-closet or laundry-room door and use straight pins to affix extra buttons and packets of thread.*