lucg

• 2 decades: Netherlands
• 2 years: Belgium
• 2 months: Finland
• 2 weeks: Iceland
• 2 days: United Kingdom
• 2 hours: Switzerland
• Somewhere between 2 minutes and 2 seconds: Netherlands, Germany, Belgium all at once

• 6 years: Germany
• 6 months: France
• 6 weeks... this is getting tricky, Luxembourg is probably closest but not close enough to claim this tier
• 6 days: Poland
• 6 hours: Sweden
• 6 minutes: I give up

You can never have enough socks. Many a christmas goes by where again nobody gifts me a nice pair of socks. People always seem to think I am in need of more books to read!

(Hope I'm somewhat correctly recounting Dumbledore's answer in relation to the mirror of Erised)