Um, I invented Post-its
The sticker-adjacent world of sticky notes
I use sticky notes in my work planner and correspondence. Sometimes they aren’t sticky enough and I reinforce them with scotch tape or stickers. Lots of options available online, in stationery, craft, and office supply stores, and directly from creators.
Erin Condren sucks as a person. She helped her kids organized a high school graduation party by pretending it was a BLM protest during the pandemic.