Findings:

• mic's (user)
• equestrian helmet
• Where the hell is your helmet
• mic
• Open mic night
• When boomboxes came with little internal mics
• The Everything Open Mic
• Echo Mic
• Radio mic
• Mic Stylz
• mic (user)
• sailor mic (user)
• Dick on the Mic
• There's a God on the Mic
• candy mic (user)
• If you had any balls, you'd say 'Oh, my God, what is that thing?' then scream and cut your mic.
• smoky mic pot (user)
• Mics of the Roundtable
• Notes from an open mic night
• mic drop
• The Golden Helmet
• Helmet
• Helmeted
• helmet hair
• Helmet head
• Why did kamikaze pilots wear helmets?
• The Green Helmet
• Motorcycle helmet tips
• yellow helmet
• Pith helmet
• Dark Helmet
• Policeman's Helmet
• Koren Helmet
• Helmet (user)
• My heart wears a helmet
• God helmet
• Motorcycle helmet
• Safety Helmet and Assessment Rating Programme
• Captain Subtext and his truth helmet
• Life sucks, get a helmet
• wear your helmet

If you Log in you could create a "helmet mic" node. If you don't already have an account, you can register here.