What makes " שכר שבת בהבלעה" (shabbos earnings included with weekday earnings) different from regular "shabbos earnings".
vending machines; expenses for the babysitter, caterers; restaurants, hotel rooms;
Is There a Way to Move a Flower Pot with a Hole in the Bottom?;
Opening and closing cereal boxes, cookie packages, books, etc. with letters, numbers, pictures printed on them.