Well, this is at least borderline pathetic, but I just love my birkenstock sandals! So every now and then, I scrub the footbed, the leather, spray the leather and suede with leather protector, and use a sealer on the cork edges.
Birkenstocks are wonderful! They have 5 arches built into them, and gradually the cork footbed is shaped by your own foot to create a customized orthotic for you. Initially they may not be very comfortable, but as this shaping occurs, the comfort increases. I can't get particularly pretty Birkenstocks in my size, but I bet all of you could get all kinds of beautiful Birkenstocks.
I wonder if I could talk my son into writing an Ode to Birkenstocks for me. . . . .