Inspiration is that, what every designer, not depending on sphere of his creation, needs. Looking for it he looks through lots of sites, books and different resources, sometimes he find it there, where it’s surprising, for example in mustaches.
Looks strange, but many interesting logotypes were created, using such men’s feature as mustache and here is a list of the most creative ones.
Duck Gentleman Club
Southwest Dental Care
Geek Bond Spectacles