There are usually two or three patterns in a magazine that I can see myself doing. The rest? NO WAY NO HOW! So I bought a bunch of binders, with some clear sheet protectors and spend an evening or two each year doing some slicing.
My cut up magazines go on a shelf and the next time I set up to cut up the magazines, I take one last look to confirm my choices have not changed and then they are chucked.. Well not exactly... we have an office shredder and when the magazines are shredded we use the result as a mulch around trees to keep the weeds down. Top it with decorative bark and we've kept the mowing chores down!