
It's about as heavy as a Playing Card.
(ISO 216 B8 size, 2.5" x 3.5")
It's about oneandthreetenths times as heavy as a Paper Clip.
In other words, the weight of a Paper Clip is 0.77 times 1,800 miligrams.
(average)
It's about seventenths as heavy as a Penny.
In other words, 1,800 miligrams is 0.72 times the weight of a Penny, and the weight of a Penny is 1.4 times that amount.
(United States) (formally onecent coin) (Union shield design, 2010present)The weight of a United States penny is 2,500 miligrams. According to a 2010 report by the United States Mint, the cost of manufacturing and distributing a penny is $0.0179 — more than its facevalue.
It's about oneandthreefifths times as heavy as a Jelly Bean.
In other words, the weight of a Jelly Bean is 0.63 times 1,800 miligrams.
(for Jelly Belly beans; approximate)
It's about twofifths as heavy as a Die (Dice).
In other words, 1,800 miligrams is 0.44 times the weight of a Die (Dice), and the weight of a Die (Dice) is 2.3 times that amount.
(for sixsided, 16 mm, rounded cube)
It's about twoandahalf times as heavy as a Nail.
In other words, the weight of a Nail is 0.43 times 1,800 miligrams.
(for 15gauge, 2inch, finishing nails)
It's about twofifths as heavy as a sheet of Paper.
In other words, the weight of a sheet of Paper is 3 times 1,800 miligrams.
(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 9,000,000 miligrams, 8.5 inch x 11 inch paper is 2,000,000 miligrams, each sheet weighing 5,000 miligrams. Paper of this size has a thickness of 0.004 caliper (0.1 mm). 
