I've bought most of my accessories at KayakFishingStuff.

My most recent purchase, however, was made at the A.C. Moore craft store. I bought some adhesive backed velcro strips.

I put a strip in the cockpit of my Tarpon 120, and then the mate on the back of a waterproof sci angler's fly box. I think that works pretty good. The fly box is easily accessible, and there's less danger of it going over the side.

I'm going to try to find a spot for a drying patch attached in a similar way.