Here are some end caps for ½", ¾" and 1" Schedule 40 PVC pipe.  My other PVC projects and models can be found here:  [https://makerworld.com/en/collections/2752844](https://makerworld.com/en/collections/2752844).   And check out my full collection of hardware models here:   [https://makerworld.com/en/collections/3121074](https://makerworld.com/en/collections/3121074)