I have some. I got them from Mabel's Labels for free or very low cost. I can't remember. They're pretty basic.
QC has extremely strict privacy laws so I still don't even know all the last names of the kids that DS used to attend daycare/preschool with for the past 4 yrs. Much less their contact info. Also, there is the added confusion of differing last names...marriage is much less common here, even if there are children, and all married women in QC keep their maiden names. So, even if you did know the child's full name you still might be SOL. Our phone is in my name, not DH's.
I don't hand them out frequently but I have used them to exchange info with school parents. I've never been handed one in return but most of the parents seemed to think it was a great idea. Less hunting around for scraps of paper and a pen. FWIW, smart phones are not as prevalent here as they are in the US. I think they're like the scarps of paper...they get entered into someone's agenda or phone book and then thrown away. I know I don't keep all that paper in my purse. It's bad enough as it is!