I'll add toilet rolls for another reason...... .....all that effing glue they use to stick down the end of a new one...... ......you waste half a bloody tree trying to get it undone...... ......and then the damn plies separate to unroll incorrectly so the perforations don't line up...... ......so you waste more trying to sort that out or you end up wiping your arse with the rough inner side of the plies.