Conversation

There really isn’t much useful non-destructive actuation you can do to electronics I guess. MacGyver had a couple of episodes where he shorts a potentiometer on a laser pointer to make it more powerful (apparently they’re capable of more output than the design used)
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Analog and modular synthesizers, for one. All audio circuits, really. Crystal radios are another (radio, tv, wifi, telephone, Bluetooth)/ Electronics are very hard to have user-facing multi tools because the interface protocols are arbitrary and must be interpreted to be useful
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The ultimate electronic multi tool is the microprocessor. Part of it might also be that purpose-built equipment generally does the job better. Food processors are multitools, as are drills (change bits), and saws (change blades).