http://www.carsguide.com.au/blogs-an..._a_good_effort
Here is a link on Audi TT RS Repair Kit, it got him going long enough to limp back to the dealer to get another tyre.
Bottom line is: the can of goo and compressor is a cop-out measure by Toyota and nothing will ever replace a full spare - you can swap out for one perfectly good spare tyre and be alright rather than worrying whether that goo will hold out while you limp home!