When shopping flea markets, antiques shops, and tag sales, keep your eyes open for bags, crates, and containers bearing their original labels or printed graphics. Burlap sacks once used to hold coffee beans, animal feed, or seeds for planting make noteworthy chair covers. Boxes -- from colorfully stickered fruit crates to ink-stamped wooden beer cases -- stylishly stack up as bases for patio tables, serving bars, and storage shelves.