Figure A--Christmas ornaments first appeared in 16th-century Germany and consisted primarily of candy, fruits and toys for children. For 200 years a decorated tree was a child's delight because most of the ornaments were edible. Figure B--The industrial age brought manufactured ornaments into wide use, and small toys and gifts were tied to the branches of Christmas trees. By the second half of the 19th century, trees struggled to stand under the weight of the gifts.
Figure G--Long before electric lights twinkled on their boughs, Christmas trees were lit by wax candles. This was something of a fire hazard, so buckets of water were often hidden in the parlor to douse the tree in case the lighting got out of hand. Figure H--Edward Johnson, the vice president of Thomas Edison's electric company, wired 80 red, white and blue lights to his Christmas tree in 1882. Despite being enormously safer than candles, electric lights didn't become a Christmas staple until electricity became widely available in American homes in the 1920s.