While you are on the site, in your browser find and click "Add to Home Screen" A CGN beaver app icon will then be created to your phone that is directly link to the site.
Note: This feature may not be available in some browsers.
Liberty Tree Collectors out of the US sells them as does IMA. I believe it's around $15US per pound. I saw some of them in Chilliwack a few weeks ago and they looked pretty good, even at a buck each.
Where are you in Manitoba?
I picked up a baggie of flint rocks at West Edmonton Mall for this exact reason.
Pm me and maybe we can work something out.
They set me back $10 each. Price is still stuck to the rocks.
Small fist sized pieces, if this is what you're looking for...