Submitted for the invisibleShield since my brother has a voucher for it.
Apparently if you're the first one committed to sending them the device, you get a free invisibleShield.
I think that getting all of us to submit the Kobo request is a good one.
Edit: Oooh, if you're in Australia you can get them to make you a custom invisiShield. That's a lot easier for me (I've worked out costs for getting that Kindle 2 cover from America that KjellM spoke about; it's actually cheaper to get the custom one for those living in Aussieland). The 30% off voucher is only valid on the ZAGG.com website, and even with that discount it's AU$4 cheaper to get it here. In addition, I don't have to worry about the Kindle 2 cover being too small, and the shipping here will be faster.
It's weird that the ZAGG.com site doesn't make custom screen protectors - for once we're ahead of America! Since the invisibleShield is actually made in America, this is rather weird!
Anyway, here's the custom site for the Aussies out there:
http://www.invisibleshield.com.au/custom-order
I'd be very interested in seeing how the Kindle 2 protector fits the Kobo.
Yet another edit: My measurement of the Kobo screen is 910mm x 1220mm. Does this agree with everyone elses?