Ideas to help you actively object to wasteful JunkMail:

When you get "ads" enclosed with your phone, electricity or any other bill, return these "ads" with your payment, or just by themselves in the reply paid envelope.  Let the sending companies throw their own junk mail away.

When you get those "pre-approved" letters in the mail for everything from credit cards to 2nd mortgages and similar type junk, do not throw away the return envelope.  Most of these come with postage-paid return envelopes, right?  It costs them more than the regular postage "IF" and when they receive them back ( but it costs them nothing if you throw them away!).

The postage is according to the weight of the envelope.  In that case, why not get rid of some of your other junk mail and put it in these cool little, postage-paid return envelopes.

Another neat idea :

Send an ad for your local "Carpet Cleaning" to Your Credit Card provider.

Send a pizza coupon to "Your Bank"..... If you didn't get anything else that day, then just send them their blank application back!  If you want to remain anonymous, just make sure your name isn't on anything you send them.  You can even send the envelope back empty if you want to just keep them guessing!  It still costs them.

The banks and credit card companies are currently getting a lot of their own junk back in the mail, but folks, we need to OVERWHELM them.  Let's let them know what it's like to get lots of junk mail, and best of all they're paying for it... twice!!

Let's help keep our postal service busy with this junk mail since they are saying that e-mail is cutting into their business profits, and that's why they need to increase postage costs again.

You get the idea?!