j-rocket samovar?

This is the best sub-topic that I could find, if it's wrong please let me know.

I have an electric samovar.  It's basically a 5 liter water heater that sits on the counter.  I use it all year to make my tea, but I use it a lot when it's cold.  Hot tea works great to warm the core body temps when working out in the weather.  Also, a few water bottles of the hot water does wonders for keeping a bed warm, although I prefer the "happy rock" method for this.  I was wondering how the experienced j-rocket builders would build a j-rocket samovar?  More importantly, how would you build the exhaust vents so the samovar can be used indoors?

I think you should cross-post this into one of the rocket mass threads - maybe the stove thread.  I suspect it might get the right attention there.