It could be stickers, patches, or pins. They are products that are less than perfect, with small defects like wrinkles, dots, extra strings, and other stuff. Or they are extras that didn't fit into sets. Or just stuff that didn't sell well.
Here we call them "Underachieving".
A few grab bags are listed at a time.
The current grab bag contains: 3 patches. 5 stickers.