Rip Cord
This is a minor yet essential improvement upon the usual roll of packaging tape. It has a tiny string running through the center of the tape. You can later pull on the string to cut the tape in half. This turns the otherwise tedious task of opening a box into a simple movement with a single gesture. You will no longer need to look for the scissors or the party knife which have a tendency to disappear every time you are moving stuff. The string is easy to locate and lift and literally does the job for you.
Rip Cord via quirky.com