2000 To Date Proof Boxes

You can do a few different things and I will list them from most expensive to least expensive:

two and three lens storage boxes are available from the US Mint, looks great but a bit pricey though

The next option is a generic heavy duty storage box, this is what I use for my proof sets

Last option is the cheapest, just use a women's dress shoe box (that type of box works best because it is narrower than a mens or athletic shoe box so the sets do not slide around)