One of the things that I encounter when looking at online stores for fountain pens is that so many of the companies that supply stuff are based in the US. What about doing a feature on companies based in Europe or the UK. There are some great stores, such as Cult Pens and Tiger Pens in the UK; there must be others as well. What about covering UK or European pen stores?
Also, more features on lettering and calligraphy would be good.
Bookmarks