Free Casio CT X700. It’s a really great keyboard. They keys aren’t technically weighted but to me they feel really good, they’re piano size and aren’t plasticky and clicky. 3 levels of velocity (touch sensitivity) so it’s a great keyboard for a child to learn on if you want them to learn on something somewhat close to a piano.
The DC port is broken so you do have to use batteries for it instead of a power cable, but I consider that a feature. Other than the dc port, it’s in excellent condition. Ok