Steep rental fees often make it impractical to keep a dumpster on site for the duration of a job, so some builders create an unsightly junk pile. The Bagster Dumpster in a Bag looks to be a better solution. Available at building supply centers and online ($30 on Amazon), the bag unfolds to become a 3-cubic-yard container (4 feet by 8 feet by 2 1/2 feet) that, according to the maker, holds as much as 3,300 pounds of debris. Pickup service — for $100 — is available in most major metropolitan areas. Waste Management, 877/789-2247, thebagster.com