Advice on water boil

Hi all, long time lurker yadda yadda! I love my coffee and was hoping to get some advice on an ultralight option for single day hikes. I have a little coffee press but I need a water boiling option that is not bulky (not interested in thermos). I don’t want to cook food (have bigger versions for that on longer hikes), just want something that could bring 200 mls to the boil.
Any product advice?

I have a Jetboil I carry and use very compact, KMart make a cheap version of the Jetboil and there are a few others I can’t think of right now