Grabbing a marker pen and writing directly on your moving boxes is the quickest way to label your boxes and ensure they end up in the right room on moving day.
Permanent Marker pens can be used for labelling boxes.
Tip: Mark each box on the tape which room it was packed in. IE Front room/Bed 1/Bed 2 etc., then a brief description of the contents, this will help both the removal crews efficiently deliver the boxes to each room, so you know what's inside.
Make sure to label the one with the kettle and teabags very clearly!