Lay them out somewhere dry? Some people use the oven, but I'm wary about that.

Somebody told me once that the slower they dry, the more potent they are. He said that since they're picked and losing moisture, they try to compensate by producing psilocybin, so the longer they're drying, the more psilocybin they make.

DON'T take that as fact, because it's just what I heard. Of course, don't rush the drying process anyway. You don't want crunchy shrooms that do jack shit.