It's about as heavy as a Raindrop.
(a.k.a. drop, a.k.a. droplet) (average)
It's about one-fourth as heavy as a Nail.
In other words, 200 miligrams is 0.25 times the weight of a Nail, and the weight of a Nail is 4 times that amount.(for 15-gauge, 2-inch, finishing nails)
It's about one-fifth as heavy as a Jelly Bean.
In other words, 200 miligrams is 0.18 times the weight of a Jelly Bean, and the weight of a Jelly Bean is 5.6 times that amount.(for Jelly Belly beans; approximate)
It's about seven times as heavy as a Grain of Rice.
In other words, 200 miligrams is 6.9 times the weight of a Grain of Rice, and the weight of a Grain of Rice is 0.14 times that amount.(long grain; 14% moisture content)
A single long grain of rice weighs an average of 29 mg. A staple through most of human history, archaeological evidence indicates that the earliest rice cultivation was about 11,500 years ago.
It's about one-tenth as heavy as a Paper Clip.
In other words, 200 miligrams is 0.14 times the weight of a Paper Clip, and the weight of a Paper Clip is 7.1 times that amount.(average)
It's about one-tenth as heavy as a Playing Card.
In other words, 200 miligrams is 0.11 times the weight of a Playing Card, and the weight of a Playing Card is 9.1 times that amount.(ISO 216 B8 size, 2.5" x 3.5")
A single ISO 216 B8-size playing card weighs 1,800 miligrams. 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-fifteenth as heavy as a Penny.
In other words, the weight of a Penny is 13 times 200 miligrams.(United States) (formally one-cent coin) (Union shield design, 2010-present)
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 face-value.