Opening and closing cereal boxes, cookie packages, books, etc. with letters, numbers, pictures printed on them.
Various Examples of Where We Have the Problem of דבר דבר (Dabair Davar) and ממצוא חפציך (Mimtzo Cheftzecha);
opening up knots with one pull;
understanding the concept of גזרה שמא יתקע (a person might come to tighten it);