I wrote about an idea I had not too long ago. The idea was to take empty Pilot Iroshizuku bottles, clean them and then use them as a inkwell or a ink bottle for other inks. Because not every bottle of ink is the same. Some of them are just a bottle, with a flat bottom. And that can make it a struggle to fill your pens, even though there are a lot of ink left. Especially with pens like the Vanishing Point.
I started doing this a few weeks ago and it works like a charm.
This got me to think about looking for something even better. But it works for now.