Tim Hortons is doing their part:

(From http://www.timhortons.com/ca/en/menu...s.html#10453):
Alberta Rose Donut

Rallying to support relief efforts, local restaurant owners have created a special Alberta Rose donut, with 100 per cent of sales from the $1 baked good going directly to Red Cross flood relief efforts. The Alberta Rose is a vanilla dipped, bloom donut with a venetian cream center, topped with strawberry bark. Available for a limited time at participating Alberta restaurants. Canadians wishing to help can also text "FLOOD" to 45678 to donate $5 with all proceeds going to the recovery, restoration and rebuilding of Southern Alberta.

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This is at the Canadian shops. I don't know if they have it at the U.S. ones too. (I should stop by one of the Ann Arbor ones and check that out.)

I just did a Google search for others. Here are a couple:
http://www.theneedisnow.org/
http://blogs.calgaryherald.com/2013/...d-relief-fund/

and of course, the Red Cross: http://www.redcross.ca/donate/donate...alberta-floods