Many thanks to André (PY2KGB/VE2ZDX) who writes:
Hi Thomas!
I’m writing to share my idea for a cheap and easy to build go box. It’s not for a QRP rig, but the concept can be applied for the ft818, for example. Check out this YouTube video:
I’ve been operating under snow with this box, in “ninja” style.
Because if I wait for it to stop snowing here I’ll do nothing for 3 months, hehe!