Talking all about saving paper and things like that, I noticed my mailbox gets totally spammed with credit card offers and such, which I have never ever used. Besides the annoyance that you have to shred those "offers" so that nobody misuses them, they also fill up the mailbox and make a big mess.
Most of those companies get the details from credit reporting agencies. There is now a number you can call that will stop the credit agencies from giving out this information:
It seems to be like the do-not-call list for phone, but this one is for mail.
I just got mine removed, time shall tell how well it works.