Jacob, Oliver, and I were driving back home, about an 8-hour drive. At one point I heard Jacob say from the back seat, “Oliver, you can’t have my book. It has a bookmark in it!”

Aside from the apparent anti-sharing properties of bookmarks, I sort of smiled at Jacob inventing a bookmark.

An hour later, I heard Oliver saying, “Jacob, you can’t have MY book. It has a bookmark too!”

And again I thought that sounded rather cute. The thought of traveling boys — and they did travel very well — bookmarking the books I brought for them was a nice one.

And then I realized: I hadn’t brought bookmarks. Or, as far as I could recall, bookmark-making material.

I really wanted to say, “Uhm, Jacob, just what did you make that bookmark from?” But I didn’t. I figured everyone would be happier not having to deal with that question.