Anybody know where I can borrow or rent one of these for a few days next week?

Borrow? Do you realize a Sybian and it's attachments cost in excess of $1,000? I doubt anyone wants to let you use one for free, unless the person is a friend of yours.

Rent? I never use anyone's sex toys or let anyone use mine! If a sex toy is not new, it's not going in my pussy or ass! I'd never loan or rent any type of sex toy or sex machine.

There are providers in Vegas (and who visit Vegas) who own a Sybian. Perhaps you'd get a reply if you booked a provider and her Sybian.