I've decided it was time to make a list of all the loose cartridges I have and it turns out I've got one or two... Here's my collection list. Anyone else collect singles?
https://docs.google.com/document/d/1SYwNGj6ihCbj_Ljh6kad-h7xEB84apjyX5gBR1zjy6w/pub
https://docs.google.com/document/d/1SYwNGj6ihCbj_Ljh6kad-h7xEB84apjyX5gBR1zjy6w/pub