Modified Pack n Play caddy hook

I have a pack n play caddy (place to put odd and ends) made by Graco to fit on the end of their pack n play travel cribs. I do not have a grace pack n play but a Nuna Sena play yard. The Nuna has thicker rails and i needed to create hooks that would be compatible with Graco's caddy but fit over the Nuna's larger diameter rails. I created the model in openSCAD and it should ideally be easily modifiable.... but no promises.