The model by Wolfcrest was already a great starting point, but I noticed that the straws weren't held securely in place. So I added some guides in the middle to prevent the straws from exiting to the side while inserting.
I also increased the depth of the bottom holes to prevent the straws from slipping out. Since the original file was only provided as STL, I created a new model based on the dimensions of the original.
It prints best lying on the back. I printed with a Bambulab P1S with a 0.4mm nozzle and it didn't need any supports.
The author remixed this model.
This model has deeper holes at the bottom to securely hold the straws in place. It also has guides in the middle to prevent straws from falling out at the side when inserting them (which nearly happened to me on the original model).