Green Dimes is a service that helps stop spam from arriving in your physical mail box. I recommended it to family when it was $35/year; it is now a one-time $16 payment, so I recommend it even more strongly.
As a bonus, they’ve decided to start lobbying Congress to fix the problem with a Do Not Mail list, similar to the Do Not Call list. You can obviously help yourself out by subscribing to the service, but if not, go ahead and sign their petition for the Do Not Mail list. No one should have the right to waste our time by spamming us with catalogs any more than they should have the right to spam us with viagra ads.