You are correct. Their website isn't so great for that kind of donation. I got most of my info from the book Knitting for Peace. See if you can get the book or see it through your library if possible, too. It has patterns and info for lots of charities.
ETA: I just looked at the book and the only pattern for that specific charity is the socks although they say they will take other items like vests and sweaters. There are so many charities so find one you love and do what you can.