> virtual ground:

Here is a $0.3 one:

        Vcc    Vcc
        |      |
        C      R1
    NPN B------+
        E      |
VG -----+      |
        E      |
    PNP B------+
        C      R2
        |      |
        GND    GND

It can be modified to suit the different current requirements of the two
LEDs for equal brightness (change the ratio between R1 and R2). The
current in the divider should be about 2 mA for garden variety low cost
transistors and loads under 50mA.

Peter

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