Still others were writing nothings upon the table with the erasers at the end of their pencils.
"Botchan (Master Darling)"
Mr. Kin-nosuke Natsume, trans. by Yasotaro Morri
Long before she returned kids were throwing erasers, throwing books, running around the room, fighting, and even running out one door, down the hall, and back into the room through another door.
"The-Life-of-Me-an-autobiography"
Johnson, Clarence Edgar
Although they will be hard to get, crumbs of natural rubber, such as you might find in old rubber bands and pencil erasers, are also effective.
"Simple Sabotage Field Manual"
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