It's about 250,000 times as heavy as a Die (Dice)
In other words, the weight of a Die (Dice) is 0.00000420 times 999 kilograms.(for six-sided, 16 mm, rounded cube)
A die, of the size most commonly used in board games and casinos, typically weight 0.0041 kilograms. 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 400,000 times as heavy as a Penny
In other words, the weight of a Penny is 0.00000250 times 999 kilograms.(United States) (formally one-cent coin) (Union shield design, 2010-present)
The weight of a United States penny is 0.0025 kilograms. 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 550,000 times as heavy as a Playing Card
In other words, the weight of a Playing Card is 0.00000180 times 999 kilograms.(ISO 216 B8 size, 2.5" x 3.5")
A single ISO 216 B8-size playing card weighs 0.0018 kilograms. 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 700,000 times as heavy as a Paper Clip
In other words, 999 kilograms is 710,000 times the weight of a Paper Clip, and the weight of a Paper Clip is 0.00000140 times that amount.(average)
Notwithstanding the tremendous variation in sizes and materials, a typical paperclip weighs about 0.0014 kilograms. 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 900,000 times as heavy as a Jelly Bean
In other words, 999 kilograms is 910,000 times the weight of a Jelly Bean, and the weight of a Jelly Bean is 0.00000110 times that amount.(for Jelly Belly beans; approximate)
Made of sugar, corn syrup, and pectin, a single jelly bean weighs about 0.0011 kilograms. President Ronald Reagan cited jelly beans as his favorite candy and 3,200 kilograms of the candies were served at his first inauguration in 1981.
It's about 1,500,000 times as heavy as a Nail
It's about 5,000,000 times as heavy as a Raindrop
In other words, the weight of a Raindrop is 0.000000200 times 999 kilograms.(a.k.a. drop, a.k.a. droplet) (average)
The weight of a raindrop depends heavily on the type of weather, but averages about 0.0002 kilograms. The familiar teardrop shape of a raindrop is actually an optical illusion, caused by the reflection of the light and the motion of the drop.