How I get free or almost free diapers and wipes or other stuff.

I don't know how many people know this but at London Drugs you can use multiple coupons towards one item as long as each is a different coupon. I save mine up then when some are nearing expiry I take them to London Drugs and use them up. Some of the employees at London Drugs don't know you can do this but I just tell them it's their policy and they can ask a manager if they want.

There's a lot of good information regarding coupon stacking at London Drugs here.