I have been drying some flowers with my microwave flower press that I bought from Lee Valley a number of years ago. It is a fantastic way to dry flowers. The pansies dry in 3 minutes at 30% power. The flowers retain their colours really well with this method, and you don't have to wait for weeks for the flowers to dry in an old book.
The press is made of two clay tiles ( mine are 6" square), two half-inch thick felt pads and two pieces of white cotton fabric that the flowers go on. The moisture from the flowers is wicked away by the felt and comes out through the holes in the clay. The clay tiles also moderate the temperature so that the flowers dry evenly.
It takes a bit of experimenting to get the times right for different flowers and leaves (plants with oil in them burn easily), but the microwave press is a great way to dry plants.