It’s been my experience that women enjoy finding little romantic notes from their husbands in unexpected places. I discovered a variation on that theme when MCF linked to Fodey.com in a post one day. The site has all sorts of little image generators that display a message you provide. If you enter a romantic message, then save the generated image, you can create an HTML file to display it and then set the file as your browser’s home page. Then when your wife opens the browser, she’ll see the message and, hopefully, get a small thrill from it.
If you want to do this but don’t know how to create an HTML file, e-mail me and I can send you a template with instructions.