I cannot test it atm, but there is the usb-keyboard 'driver' - somewhere in the software-release-forum. And I think the left/right buttons or page up/down was what the flip-bar was mapped to.
So in the end you need a cheap-usb-keyboard (one you don't mind to trample upon) and a long usb-cable. The rest fine-motorical movement of your toes
.
And I think tribble said what makes this really a useful approach, if you have no hands or miss some motorical control or simply have jam or honey on your fingers, you would not want to touch your hallowed iLiad
.
Cheers, bon appetít!
Nergal