Q without A

for two weeks now i´m intensively thinking about my master thesis. i realized that if i want to finish my thesis before a possible exchange term, i should start in february with it. therefore i really should start to get a topic...
but hmmm... what should i write about? what could be interesting? is there a blockbuster topic out there? is there an interesting topic which i could write about in a cooperation with a company? who´s a good prof.? sofar there are only questions here. i´m browsing institute website, websites of other universities, company websites, websites with topics of already written diploma thesis in order to find some answers, to have an input to think about, to get a solution in the end.
maybe i get THE idea tomorrow while taking a shower, maybe in a week at do-it after not sleeping enough? perhaps santa claus tells me a solution or maybe i´ll find it under a christmas tree somewhere?
anyways, it might take some time to come up with a topic and i´ll take my time to choose it. the first step in the right direction i made already: i have now at least 5% more brain capacity to use, because i cut my hair ;-)