If you have any creative, fun, and interactive HTML learning guides that you would like us to share as a resource during HTML day, please pass that along! (With a note for how you'd like to be credited if relevant to what you share).
We are going to be considering writing html on paper and potentially phones. If you have pointers for this working with your own students, like mobile editors with live preview, that would be appreciated!

eggshell stickers with messages like "i don't dream of owning a house on stolen land" written on them

a collection of little animals drawn on label paper

holding a handful of stickers printed on label paper with a little character that is smiling

a stack of label paper and posca markers