Discovering gems in old mail

I've just spent the last hour clearing three months' worth of mail that had been piling up on my desk. While I didn't find any long-lost love letters, I found that most of my mail consists of:

• bank statements
• credit card bills
• insurance policy notices and receipts
• investment statements

Yes, very boring stuff. But I did also uncover the following gems:

• a one-month-old cheque for an insurance policy - which I need to find out why I received anyway
• a three-month-old cheque from Google Adsense - and my first ever cheque from them! How could I miss this???
• a reminder for my dental appointment next week - whew! Luckily I found this now.
• (while strictly not being postal mail, but it was buried at the bottom of the pile) my long-lost Kinokuniya book vouchers... that expired three months ago!

I guess it would serve me well to go through my postal mail more regularly from now on...

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