Any one tried making suppositories by adding glycerin to saline water and freezing?

Just a thought. I know saline needs a colder temp too freeze, but add glycerin and saline water to your requirements , use a rubber glove and stretch it over a jar. fill the fingers with the mix and freeze.

Any suggestions on the subject? Anybody tried it?

There are ice cube trays that are shaped to make ice that can fit into water bottles and that's what I use.

What a great idea. Where you buy them?

Target, Walmart, Amazon, and many other retailers carry them, although not necessarily in stock in the physical stores. You can look online before going to the store itself to see if they have it.