Although the result will not be exactly the same silvery tone as a piece of brushed stainless steel, passable results can be sometimes obtained by 'tinning' with the use of a solder bath. The item needs to be very clean, correctly fluxed and the solder of a high tin content, or if the component is a multi part component that has already been soldered together and would only stand limited heat, you could then use a tin/bismuth solder which has a low melting point(130c or so). Heating of the bath needs to be precisely controlled and sufficient ventilation/ fume extraction/PPE is necessary though little more than you should have for standard best soldering practice. Much more 'do-able' than diy plating.
The result won't stay as a super shiny piece of stainless, but at least will be permanently silver and not be yellow or become rapidly oxidised as plain brass.
Trevor