Thanks to a legion of software apps, smartphones have evolved into "Star Trek"-like communicator devices. Of course, loading up on software isn't the only way to soup up your phone's "app"-titudes. There's actually a slew of hardware gadgets that snap right onto your phone and open up myriad app possibilities. Best of all, these attachments are tailor-made for DIY doings. So before you embark on your next big home renovation or construction project, consider transforming your phone into a DIY toolbox with one or more of the following add-ons.