Niobium is a shiny, white, soft, ductile metal, that takes on a bluish tinge when exposed to air at room temperatures for a long time. The metal starts to oxidize in air at high temperatures, and when handled hot must be done so under a protective atmosphere so as to minimize oxide production. The name was adopted officially by IUPAC in 1950, but a few commercial producers still refer to it as columbium.
Source: Webelements.
You’re looking for a small plastic vile tube; BYO pen/pencil.