WTB/ISO childs bicycle 24inch wheel size or xs frame 26inch

Looking for a extra Mountain bike someone has that they are not using
Free to 500nt +/-
Child is 9years almost able to ride an adult bike
But safer to have a smaller frame
If it needs some repair or air in tires i can fix
Pick up around taipei Monday-friday 8-4pm is best
24 inch wheel size or xs frame size 26 is ok.

Let me know if you have something!
Thanks