I am planning to purchase, soon, 5-20 first day covers, possibly more over time, and I am soliciting suggestions for how to store and display them. Are there any particular items that you suggest? FDC albums? Brands? Stock sheets? Will FDC's fit in stock sheets? How do you store your FDC's?
I use a combination. I have, I think, four different first day cover albums from different vendors. They are OK. However the vast majority of my covers are kept in Vario pages - the pages with 2 sleeves - and those pages are kept in the Vario grande binders.
I use SuperSafe FDC cover albums, and am real happy with them. They used to be inexpensive ($15 each), but I was shocked at the prices last time I tried to find one. You can often fin used ones reasonably priced.
If budget is an issue, or if your son is the creative type you can use common materials found at any office supply store. I have a cover collection on simple pages I print out onto acid-free paper then I mount the covers onto the page with photo corners found also easily available. You need a heavy weight paper - 28lb or 65lb cover stock I would recommend - and a binder along with the photo corners and you have a stamp album!