Here's the holder for this version
https://www.printables.com/model/631014-cat-litter-box-holder
*Edited the handle to be smoother and without the sharpcut*
Printed in PLA 70%infill should do the work no supports needed.
Works with PETG too but i choose PLA because it's cheaper to print with in this case
The author marked this model as their own original creation.