That is so cool. I love the way your girlfriend sent you to the hardware store with suggestive list of items. Years ago, I was friends with the owners of Paul C Leather and his wife. They loved their play but also enjoyed a vanilla life. When one of them wanted to play, they'd subtly leave a particular bracelet out in the morning. (The only people I've met so far that have a bracelet fetish.) So, all day, they'd both be thinking about it.