Typically the filler metals for GTAW are stored in a manner that protects them from the general shop environment, i.e., mists, dust, etc. A storage closet or a set of drawers such as that used to store drawings in work nicely. The 10 pound boxes fit in the draws and you can use a separate drawer for each alloy.

Electrode for use with GMAW can be stored in their original containers placed in a cabinet until needed for production work. They can be returned to the plastic bags and placed back into the cardboard containers when they are not on the machine. The wire feeder should cover the electrode. As is the case with GTAW filler metals, the spools need to be protected from shop mists and dust. Some companies sell a fiber reinforced composite container that attaches directly to the wire feed so the spool is enclosed while it is on the machine. I've cut the cardboard box and placed it over the spool so that it protected the spool while it was on the machine. It usually fits loose enough that the spool can turn easily when the wire feeder is engaged.

There is a company that sells a small felt pad that fits over the wire and wipes it as it the wire is drawn through the pad by the wire feeder. It is sometimes referred to as a lubricator which is probably the worst thing you could call it. I has a situation this past summer where a welder "wannabe" actually placed a dollop of grease on the felt pad to help lubricate the wire.

Some companies actually store the filler metals in a separate room with doors that remain closed at all times to keep contamination to a minimum.

Best regards - Al