You think mowing your lawn is awfully boring? Maybe you should consider building yourself a remote controlled lawn mower like Lawnbot400 here:

Of course, there’s the part where you have to clean up all the mess afterwards…
But maybe you already have a “LawnSucker400″ project there.
If you do, maybe you should go to the official LawnMower400 website for more info (complete DIY guide), and to combine your ideas!

Source: TechEBlog