list the several “phantasmagoric forms” that appear in Hester’s mind on the scaffold.

From the text:

Reminiscences, the most trifling and immaterial, passages of infancy and school–days, sports, childish quarrels, and the little domestic traits of her maiden years, came swarming back upon her, intermingled with recollections of whatever was gravest in her subsequent life; one picture precisely as vivid as another; as if all were of similar importance, or all alike a play. Possibly, it was an instinctive device of her spirit to relieve itself by the exhibition of these phantasmagoric forms, from the cruel weight and hardness of the reality.