My first idea for my Ectocomp entry was pretty much First Person.
My second idea was to spookify some of the Inform 7 examples (think this) and put a couple together (like turning the picture in Slightly Wrong into the wight from The Unexamined Life, and making you teleport when you examine it), but I eventually felt that using so much already written source like that was against the spirit of Speed IF.
And I didn’t have a third idea, unfortunately. Maybe next year.