Painted blob
Re spin recovery -
Gnat, as already mentioned there were 2 doll eyes and during spin it could be quite oscilliatory and difficult to see exactly what was going on so kick the black i.e. rudder and punch the white i.e. aileron. There was also a tiny desyn indicator on the panel showing aileron neutral position so once once recovery happening, ailerons neutral on the indicator.
Hunter, no such sophistication but ailerons neutral important during unload and as stick top was slightly canted there was a white blob on the stick top covers and another somewhere on the instrument panel. Line them up for aileron neutral. Also handy if just departing and quickly needing to centralise everything.