Metal MILO [1] tins are pretty good. The tight fitting lid provides a continuous RF seal and being tin-plated you can solder though connectors in place, provi

Metal MILO [1] tins are pretty good. The tight fitting lid provides a continuous RF seal and being tin-plated you can solder though connectors in place, providing good ground continuity. [1] https://en.wikipedia.org/wiki/Milo_(drink) https://en.wikipedia.org/wiki/Milo_(drink)