The Red Cross is having a promotion where you can earn 20 Aeroplan miles (or Scene points, if that’s more your style) per $1 donated.
This is a pretty amazing return (40% back at a $0.02 valuation), and for a great cause. The caveat is that you aren’t able to get a tax receipt for these donations, though for most people it will still work out favourably.
The promo is listed on their homepage: http://www.redcross.ca
