Hello! I live in Winnipeg, MB, and I can do tombstone lookups! I just need a name, and which cemetery I'm supposed to look in (because Winnipeg has a LOT of cemeteries).
My specialty is St. Boniface cemeteries. If the person whose tombstone you're looking for was French and lived in Winnipeg, there's a good chance they're in a St. Boniface cemetery. I'm more familiar with these cemeteries, because I live in the area, and because I'm French, so most of the tombstones I look for are there.
I do these lookups for free, because I walk or ride my bike, so it doesn't cost me anything, and because random acts of genealogical kindness are nice. :)