i'll say what most ppl here say: come up with ur own ideas. don't ask for them. 99.999% of the time if someone does give u an idea it wont be good or it'll be cliche. why would someone give u a great idea they came up with when they could write it themselves?
find a way to relax, don't think about trying to find that idea, distract yourself whatever, and something will come to you. watch a movie, or read the blurb from a TV guide. those small things can trigger big ideas.