It can be handy on cross country legs to put the wind on the heading bug and set the heading on the needle as it gives an idea of expected drift. Also handy for working out diversion headings. Put your estimated track on the needle, drop an imaginary line down fromj the bug to a right angle from the track and this gives you the proportion of the max drift to apply to the track.
As mentioned before, when arriving at at an airfield, put the needle on the R/W heading which then gives a useful pictorial picture of which is the correct R/W and again an indication of the likely drift on the D/W leg and crosswind component on the R/W.