Window sill hook

Hang on, I can hang something by my window? Yes, a window sill hook - slot it onto the window sill (typically 1.5mm thick) and hang something on it [wet umbrella, water bottle, pouch, phone, mom's photo….no don't do that]. It's slim enough that the window glides past it like it didn't exist, just like what my ex did. No nails, no double sided tape, no glue, no nothin'. Just slip it in and get a hang out of it.