What should I do with my mashup domains?


Earlier this week I blogged about MashupCrowd.com and MashupSpy.com, but I still have some other mashup .com domains that I am not sure what I should do with. They are:

I am not sure what to do with them, but I think they all have potential. Especially I love MashupCookbook.com. Unfourtunatly I do not really have an idea that is good enough (read: fun + making money) yet. Do anyone smarter than me have an idea?