Chattanooga’s CO.LAB is accepting applications for its sixth annual “Will This Float?” competition which showcases up-and-coming start-up ideas in southeast Tennessee. Those interested in being considered have until December 1 to submit their business concepts. Here’s the link to do so. The competition itself will take place from 6 to 10 p.m. December 10 at the Revelry Room. 41 East 14th Street. For more information including links to purchasing tickets, read the CO.LAB release (Will This Float_Applications Open_2015).