Kaweco Mini Squeeze Converter (for Lilliput Fountain Pens)
This clever gadget allows you to use bottled ink in your Kaweco Lilliput or even Sport.
Assuming of course that you find fiddling with little things therapeutic. (Stop sniggering.) This does allow you to use bottled ink in the Lilliput, but you get a tiny fill for a lot of effort. Syringe-filling the converter will give you a little more words per fill.
If, like me, you must have one, crack on; but I can't, hand on heart, recommend them.