Giant Rattle twist fidget. specifically made for large size print with adjusted tolerances.

i would advise not to scale down as it likely will not work.

you can include the ball for the rattle element or leave out its up to you. i personally like the extra clunk

You can increase the seize further and should be fine if you have a larger printer.

the size takes advantage of the full build plate of Bambulabs A1, P1P, P1S, X1C

Be mindful if using a bed slinger because of the height there is a chance it could fall. Consider using a brim and/or glue