Anyway, my children gave me a colour printer for Christmas. I haven't been out of the house since then so I haven't got the right paper. I have printed on standard printer paper and, where necessary, glued onto card. All these printies come from the same site, that I highly recommend, Jim's Printable Minis.
Now, honestly, all these I could have made myself. In fact, I have made very similar miniatures. I have made both fake books and books that you can open and fake rows of books (see for instance this and this and this). I have a hat box, exactly like this one, in my Victorian house, made from a flowery greeting card. I haven't made envelopes, because I haven't needed them (and I still don't know what to do with them).
Lesson learned? It is fun to try various techniques for miniature making. I will go on searching sites with printables and perhaps discover things I hadn't thought about before I had a colour printer. For instance, I can now make miniatures of my own books. But this is another story.