I have four telephone handsets in my home and it is convenient if not essential to have something to write a note or memo when I answer the telephone in any room. The number of pads in the packet make it easy to have one beside each phone with plenty standing by when those are used up. I bought my bundle during a special sale making it doubly economical. Because they are made from recycled products these pads also are environmentally friendly by saving trees.
Everyone uses post-it notes in today's world. But the 2 x 2 are too little except to mark pages because there is not enough space to write anything of real value. The 3 x 3 give you just enough space to add notes or reminders of what needs to be done. Leave the stickies for everyone: On the refrigerator for your family. Leave them at the front or back door (or even bedroom doors or bathroom mirrors) so that family members see them coming or going. They don't mar any surface. And once the message has been delivered? They can be recycled; they don't need to end up in the "trash." Very useful!