Sometimes, what you’re looking for is right under your nose… and you don’t see it!
I’ve had this Jane Davenport fountain pen for a while now. It’s an inexpensive workhorse that I don’t worry about trying things with.
It comes with three ink cartridges, and a “converter” that you can fill with any fountain pen ink you wish. You use the converter instead of a cartridge.
Recently, along with a glass pen, my husband purchased two shimmer ink samplers from The Goulet Pen Company.