It's about as heavy as a Paper Clip
Notwithstanding the tremendous variation in sizes and materials, a typical paperclip weighs about 0.0031 pounds. The country of Norway has used the paper clip as something of a national symbol since the end of World War II based on the erroneous notion that the paperclip was invented by a Norwegian, Johan Vaaler. However, the paperclip had already been in existence for at least 30 years by the time of Vaaler patented his paperclip design.
It's about four-fifths as heavy as a Playing Card
In other words, 0.0031 pounds is 0.780 times the weight of a Playing Card, and the weight of a Playing Card is 1.30 times that amount.(ISO 216 B8 size, 2.5" x 3.5")
A single ISO 216 B8-size playing card weighs 0.004 pounds. Although this size is the most common home playing card, many casinos use "bridge size" cards — 2,640 sq. mm (4.036 sq. in) smaller in area.
It's about one-and-three-tenths times as heavy as a Jelly Bean
In other words, the weight of a Jelly Bean is 0.770 times 0.0031 pounds.(for Jelly Belly beans; approximate)
Made of sugar, corn syrup, and pectin, a single jelly bean weighs about 0.0025 pounds. President Ronald Reagan cited jelly beans as his favorite candy and 7,000 lbs of the candies were served at his first inauguration in 1981.
It's about three-fifths as heavy as a Penny
In other words, 0.0031 pounds is 0.560 times the weight of a Penny, and the weight of a Penny is 1.80 times that amount.(United States) (formally one-cent coin) (Union shield design, 2010-present)
The weight of a United States penny is 0.0055 pounds. According to a 2010 report by the United States Mint, the cost of manufacturing and distributing a penny is $0.0179 — more than its face-value.
It's about one-and-four-fifths times as heavy as a Nail
It's about one-third as heavy as a Die (Dice)
In other words, the weight of a Die (Dice) is 2.90 times 0.0031 pounds.(for six-sided, 16 mm, rounded cube)
A die, of the size most commonly used in board games and casinos, typically weight 0.009 pounds. The use of dice and dice-like tools predates written history, with the oldest known examples belonging to a 5,000-year old backgammon set uncovered during an archaeological dig in modern-day Iran.
It's about three-tenths as heavy as a sheet of Paper
In other words, 0.0031 pounds is 0.280 times the weight of a sheet of Paper, and the weight of a sheet of Paper is 3.60 times that amount.(for US Letter, a.k.a. ANSI A; 215.9mm by 279.4mm (8.5 in x 11 in); 20lb)
The weight of a ream (500 sheets) of 20 lb, 8.5 inch x 11 inch paper is 4.40 pounds, each sheet weighing 0.011 pounds. Paper of this size has a thickness of 0.004 caliper (0.1 mm).