Cup o' kindness.

One act of generosity last summer--a cup of coffee paid for--has sparked thousands more. Coffee drinkers at The Steamin' Bean outside Kansas City, Missouri have been "paying it forward" ever since one person paid for the next person in line.

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At the time of publication, the strand had continued more than 6,200 times, according to the business' website (thesteaminbean.com). About $1,800 had been collected in extra donations, amounting to 25 book bags full of school supplies ready for the beginning of the school year.