Yes, unfortunately I like holy cards and have way, way, way, way, way, way too many of them. Some of them I have gotten for free from church, some of them I have bought over the years from religious gift shops.
I have found that nowadays people often take old holy cards and leave them in a church or a shrine, partly to get rid of them and partly in hopes people will say the prayer. When I find an old prayer card for someone who died long ago, I take it and do an indulgence for the person. I also research the person to see if they have an obituary or Ancestry records online so I know who I am praying for. I have a whole box of funeral cards from my Catholic grandfather-in-law that I got in my in-laws’ house cleanout, and some for my husband as well, and I’m thinking of leaving a few of those off in churches where others might pray for them.
I will post pictures of my favorites when I get back to the location where they are. My current favorite is a laminated St. Therese of Lisieux card that I think she made me find, as a little hello and message. I was having a terrible anxiety attack on a day when I needed to fly to a different continent on pilgrimage last year and I was so worried about going on a trip without my husband at home to look after things because he died. I went to Mass that morning and there was this really nice laminated St. Therese card just laying in the parking lot. I am sure some parishioner dropped it by mistake but I felt like St. Therese was saying Hello and telling me everything would be OK, and it was. I keep that card with my passport now.