Give your local shotgun range a call. Most will sell a small quantity of clay targets.
My 3 local Canadian Tryers have lots of these in stock:
https://www.canadiantire.ca/en/pdp/blaze-orange-clay-bird-target-0750022p.html
They will? Not any club I've ever shot at and I've shot at dozens on both sides of the border. Just go get them at Canadian Tire or some box store like that. That is probably your best option.