I turned my fantasies, first into reading instead of fantasizing (I use to fantasize 5-15 hours every day) and then into writing. I wrote a simple novel http://mysharingspaceonline.com/story.pdf which isn't great but it's 50,000 words/175 pages and I'm working from there.

Find some way to translate what you fantasize about into your real life during your "boring" times but in a non-threatening/fun way? I got a huge piece of poster board and lots of magazines and divided my household chores into 8 or so categories and made a collage of the various chore-representations (filing/organizing papers, vacuuming, caring for my cats, cleaning the kitchen, cleaning the bathrooms, etc.) and got a pair of dice and rolled them on the board each morning to determine which chore I would work on for 10 minutes right then and there :-) I've created a bowl (like in the book I wrote, above) full of 100 things I wanted or thought I wanted to do and drawn one a week (every Sunday) and started or done that one project that week. Make reality fun and productive, use that imagination you use for fantasizing to help you with reality.