Denis and I-- along with dozens of others-- learned about the kit-items when we were at the Assembly in Peterborough. I recall we came up with an innocent-sounding plea should any of us be stopped by the authorities. Risky as it was, many headed out for adventures on the water, sans anything more than the paddles and PFD.
I like the idea of making my own kit, using the home-made bailer WoodNCanvas described (recycle-recycle-recycle) and will check the dollar stores for the other stuff on the list.
I also like the idea of using a large, sturdy, waterproof canine of the retriever-variety as an emergency device, instead of a throw-bag.
Kathy