I'm curious too.

What's the "turnover" with those clothes - i.e. how often do you buy new ones and throw out the old ones? Ever gotten any weird looks for running around in mostly the same outfits? What do you do when you need a suit?

What do you do about your data? Do you carry any additional HDDs in those backpacks? Don't you keep any spare hardware around for when things break to be able to replace them quickly?

What about legal documents (birth certificate, graduation certificates, tax declarations, etc.)? Do you store them somewhere safely, or keep them on you?

Also, do you have any allergies? One thing I allways seem to have too little of when travelling is napkins/tissues.

What do you do for more mundane things like scissors and paper and priting stuff?