I use this setup in my second group, which performs author's songs,
as well as several covers, some of which are rather parodies,
because we write our own text to a well-known melody, close in message to the original.
As a synthesizer (except Keeley Synth-1) I use
Soviet children's electric musical toy "Solovushka" ("Nightingale"),
which I modified by adding passive HPF, LPF,
octave change toggle switch (G4-F6 | G2-F4 | G0-F2),
toggle switch for symmetrical diode signal limiting and volume knob,
also brought two tone adjustment knobs to the front panel instead of trimming resistors on the board.
And of course, an on / off toggle switch and an LED as a power indicator.
Instead of batteries, I installed a socket through the LM7806 and an output socket for jack 6.3
Boss LS-2 I use here as a mixer:
• "A+B Mix | Bypass" mode is always on
• I connect the bass to "Input"
• "Solovushka" is connected to "Return B"
• "Output" to the pedalboard.
For "Solovushka" I created several patches in Zoom MS-60B,
so I can easily alternate bass and keyboard playing.
As a stand I use a tripod from a building laser level.