These were all definitely created for and posted on the Plaza. Any context beyond the following is lost to me:
#1: As Sil says, it almost certainly relates to an agreement between herself and Narg[uzir] to create my child Narvi Jr, which was accomplished via the pictured machine.
#2a: Given to Miss Luthy (OG Plaza Yavanna and my OG Plaza mother). Evidence indicates the reason involved her outstanding literary achievements.
#2b: Given to someone else around the same time, probably someone jealous of Luthy's accomplishments.
#3: No idea, probably fan club or something.
#4: Definitely from when I left Mordor and joined the KD Drill team and decided to make an extremely high-effort first post to show my newfound KD pride and compensate for my utter lack of any Tolkien knowledge.
#5: I vaguely remember trying to prove to someone that baboons and bassoons were the same thing and this was presented as evidence in my favour. Again probably fan club but who knows
#6: I mean I feel this one is self-evident surely
#7: When you and I were on the same drill team and I (successfully? I forget) lobbied to have us named Team Hank
#7
Drill Banner (submitted)
circa 2006
Commentary: I do not remember if it was chosen
(Edit: or maybe it was word sleuth?
@Elarith any insight?)