Possible areas of investigation.

Activities
sitting
drawing
fighting
watching
rugby
football
travelling
busking

street art

driving

listening
skateboarding
eating
playing guitar

Opinion
The Compare the market adverts are good!
People need to read
Muse are amazing
Twilight is for teenage girls
Humour is the most effective form of advertising 
Minimalist branding is better  
Music is good for the soul
MMORPG's are pointless.

Place
Bed
Sweden
Gothenburg
Hawaii
Dubai
America
Somewhere inspiring
New york
Late 1950s America
Grand Canyon
The internet

Concept
surf/skate culture
busking
propaganda
flash mobs
street/guerilla advertising
type
Old advertising 
Minimalist branding

Object
vans shoes
steering wheel
car
bread
guitar
amp
mac
ps3
ps3 controller
t-shirt
phone
newspaper
ipod
phone
camera
shoes
pens
cans
peanut



This is a list of possible areas to look into that I have attempted to narrow down slightly by highlighting the ones I was most interested in, in research terms.