This box fits a bolt-action nicely, also fits anything up to Jr. Gent size. I buy them 100 at a time. If you can wait, they often have 20% off and/or free shipping specials in which case you are paying ~.50 each, delivered.
This one holds large pens. It's a nice heavy thick-walled box. The finish was less than perfect though (uneven sheen in bright light): Single BamBox, Bamboo Pen Box
There is also a version that holds two large pens. It was one of only two boxes that I was able to find that could hold double bolt action pens: Double BamBox, Bamboo Pen Box