Looking for something to do the weekend of April 11-12? For the eighth year in a row, the Motel Mozaique will be on in Rotterdam. It's a music and dance festival. From the website:

“We invite artistically interested artists, enlight especial, new and unique forms of different art disciplines, and provide a fascinating mixture of art, music, performance and film.”

Not only that, but if you participate you'll also get the chance to spend the night in some pretty unique places - here's some ideas - just click on "sleeping."