Yes, you can make your own suppositories, without molds or any fuss whatsoever.
It's great to use coconut oil that is cool enough to be solid, but still soft enough to be a little pliable. You put a little dollup on some plastic wrap and roll and fold the plastic wrap around it so you can form it into the shape of a suppository. When it's the desired shape, you finish wrapping it in plastic and put it in teh freezer to finish firming up. Repeat with several so you have a "stash" for the appropriate treatment time.
I forgot to mention that you can put tea tree oil into your coconut oil. It's probably best to melt the oil first and then add the tea tree oil, then let it cool to the point where it's firm but pliable and continue as I described above. I did infuse some crushed garlic into my melted coconut oil, but the results were very yucky smelling. I had to do a major yogurt and water douche the next morning to rid myself of the very garlicky smell. Ugh. Tea tree and garlic certainly work to get rid of troublesome germs, but they might get rid of your hubby too...
The coconut and tea tree should do the trick for any little vaginal infection. Also, if the tissue is very irritated, it might be good to throw in a little emu oil which I hear is very soothing. And just a few drops of tea tree oil will probably be sufficient, as it can tingle and burn a little bit especially on tender tissue.
Another option, I hear, is to soak a tampon or sea sponge in water and tea tree and use that as a sort of suppository.
Boric acid put in capsules is another treatment option for yeast and BV infections.
Hope this helps.