It's about one-twentieth as heavy as a Die (Dice).
In other words, the weight of a Die (Dice) is 20 times 0.20 grams.(for six-sided, 16 mm, rounded cube)
A die, of the size most commonly used in board games and casinos, typically weight 4.1 g. 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 one-twenty-fifth as heavy as a sheet of Paper.
In other words, the weight of a sheet of Paper is 30 times 0.20 grams.(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 9,000 grams, 8.5 inch x 11 inch paper is 2,000 grams, each sheet weighing 5 g. Paper of this size has a thickness of 0.004 caliper (0.1 mm).
It's about one-thirtieth as heavy as a Quarter.
In other words, 0.20 grams is 0.03527 times the weight of a Quarter, and the weight of a Quarter is 28.350 times that amount.(United States quarter-dollar coin) (a.k.a. Quarter dollar, a.k.a. America the Beautiful quarter, a.k.a. two bits)
The America the Beautiful series quarters, which began to enter circulation in 2017, weigh 5.670 g each. In answer to the common riddle, there are 119 ridges around the edge of the coin in its current design.
It's about one-thirty-fifth as heavy as an Eye (Human).
It's about 45 times as heavy as a Grain of Sand.
In other words, the weight of a Grain of Sand is 0.022 times 0.20 grams.(medium grain)
With tremendous variety in the size of grain and the component material, grains of sand weigh an average of 0.0044 grams. In 2007, a team of seven in Myrtle Beach created the world's tallest sandcastle, which measured 15.10 m (49.55 ft) in height.
It's about 55 times as heavy as a Sesame Seed.
In other words, 0.20 grams is 54.90 times the weight of a Sesame Seed, and the weight of a Sesame Seed is 0.0182 times that amount.(Sesamum indicum)
A sesame seed weighs approximately 0.00364 grams. The McDonald's Big Mac sandwich, which is well-known for its sesame seed top bun, accounts for the consumption of an estimated 2,010,000 grams of sesame seeds each day.
It's about one-sixtieth as heavy as a Battery (AAA).
In other words, the weight of a Battery (AAA) is 59 times 0.20 grams.(Alkaline)
An "AAA" size battery weighs 12 g. Batteries are named by the American National Standards Institute (ANSI) Committee C18 and AAA batteries were given their name because they were smaller than the "AA" and "A" size batteries which were invented first.