I carried out two reversible mods on my 1 pint Kelly Kettle. I added a folding pot stand like is available for the 2pt model and I added a neoprene jacket.
The pot stand can be folded or stashed inside the kettle. It weighs next to nothing and I can go without my Trangia and fuel. Incidentally, a Trangia will not boil a 1 pt. KK; it runs out of fuel first. The slightly weaker Tatonka spirit burner will boil it, but it takes about 18 mins from room temperature and expends a lot of fuel. I have a DIY side-burner spirit stove that is much hotter and takes only 2:30 and expends less fuel doing so. The other advantage is that I can cook and boil at the same time, which is great if making a bowl of ramen noodles topped with a fried egg and spam.
The second mod was a neoprene jacket. The jacket is about 2.5mm thick and has a few advantages: it prevents the delicate KK from getting too badly gouged up; it keeps hot longer; and it allows me to take hold of the hot pot body. Just so you know, it does not result in a significantly faster boil, at least not with a decent fire inside in warm temperatures. Or so says my stopwatch and thermocouple. If it was cold, windy and raining, it might. The jacket slips on and off, has slot for the cork to pop through and is fairly fireproof too.
My next mods will probably be an egg container inside the chimney, a filler filter and maybe a whistle.
What are your volcano kettle mods and accessories?