I know these may be cards and collectible to some, but I am just not feeling it. I mean, in this case, there just isn't anything player or team related, so I don't have any interest in collecting them. At the same time, I guess they are "inserts", but I just can't do it.....so, packaging material it is...for the most part.
The 1999 Opening Day versions (the bottom scans in the above), are paper and glued together, so not going to keep them since most are "ruined" anyway. Similarly, the generic ad cards on the top of the scan, just packaging material.
I can look at the bright side though, it's nice to have items for packing which are perfectly sized to protect the cards when mailing!