Let the organizing begin! The Cosco three-shelf instant storage unit is a multi-purpose shelf that assembles in about a minute without the need for any tools. You can link or stack these shelves with each other as well. And don’t let the instant part fool you, these shelves hold up to 250 lbs! Grab them at Walmart for $35.10 (reg $79). Shipping is free on orders over $50, or select free in-store pick-up.