I have a friend in Lucca Italy who has over 4,200 tissue pks in his collection. Any other unusual collections?

Question

At least three times per year, I put together a box of assorted travel-size tissue packs (the ones that are 10 in a package) and send them to Italy. Some are found at Hallmark gift stores, while others are found at party supply stores and even book stores. There are all sorts of brands--not just Kleenex. In fact, it never occurred to me that other countries have their own assorted brands and designs. So the ones I send from the U.S. are but a small contribution to a really big and unusual collection from all over the world. If you would like to view it, you can find it at: http://www.silviofioravanti.it/fazzoletti.php.
I was just wondering what other vast collections there are.

Answer 1

I collect 2p pieces with different years on them. All I need is 1922 and 1938 and I have the whole of the twentieth century.