I have two really nice turning compost bins. You can put shredded junk mail in there too. I should add you don't need a fancy bin. For years my compost bin was a circle of chicken wire where I threw grass clippings, potato peels, whatever I had. (No meat or greasy scraps, alternate "green" from vegetables with "brown" grass clips no weeds with seeds, shredded fallen leaves, shredded paper.)

I have two really nice turning compost bins. You can put shredded junk mail in there too.