It's about six-and-a-half times as heavy as a Battery (C)
In other words, the weight of a Battery (C) is 0.160 times 0.90 pounds.(Alkaline)
A "C" size battery weighs 0.140 pounds. C batteries are typically used in medium-drain devices such as musical instruments.
It's about seven times as heavy as a Tennis Ball
In other words, 0.90 pounds is 7.08 times the weight of a Tennis Ball, and the weight of a Tennis Ball is 0.1410 times that amount.(ITF Standard; for Type 2 ball)
Per International Tennis Federation standard, regulation tennis balls must weigh about 0.1270 pounds. Competition balls are also tested for bounce height, with the standards requiring that a ball dropped from 254 cm must bounce back to a height of 135 cm to 147 cm.
It's about one-tenth as heavy as a Brick
In other words, 0.90 pounds is 0.140 times the weight of a Brick, and the weight of a Brick is 7.10 times that amount.(Standard, traditional face brick - 1,900 cu. cm (120 cu. in))
A standard, traditional face brick weighs an average of 6.40 pounds. The steeple of the Church of St. Martin in Landshut, Germany is said to be the tallest brick tower in the world at a height of 130.6 m (428.5 ft) and was constructed using an estimated 650,000 bricks.
It's about nine times as heavy as a Golf Ball
In other words, 0.90 pounds is 8.8880 times the weight of a Golf Ball, and the weight of a Golf Ball is 0.11250 times that amount.(per R&A USGA Rules of Golf; maximum rule weight)
According to the Rules of Golf (as approved by the United States Golf Association and the Rules Committee of the Royal and Ancient Golf Club of Saint Andrews), golf balls must weigh no more than 0.10130 pounds. Golf balls are not required to have the familiar dimpled pattern, but the design has been popular since its invention in 1905 because it reduces drag while increasing lift.
It's about one-tenth as heavy as a Cat
In other words, the weight of a Cat is 10 times 0.90 pounds.(Felis catus) (Domestic; healthy weight)
The average domestic cat should weigh between 10 pounds. Cats are known for their righting reflex, which allows them to land on their feet and survive falls from heights of 1 m (3 ft) up to about 21 m.
It's about twelve times as heavy as a Light Bulb
In other words, the weight of a Light Bulb is 0.083 times 0.90 pounds.(a.k.a. lamp) (for A19-size, 60w, incandescent bulb by Bulbrite; package weight)
A standard, sixty-watt light bulb weighs about 0.075 pounds. The tightly-coiled filament inside a bulb of this size would measure about 579mm if uncoiled and stretched out.