What I did was include a link in each of my product details pages that went back to the category they belonged to. You can see my example on this page:
http://accessoriesoftheworld.com/shop/v … ductid=715
The easiest way to be sure it's included in new products you add is to create the link in a product and then just copy that product (or any product that already has the link in it) and paste it into your category (entire product on the Products List page). This not only makes it easy to include this link without having to re-enter it each time, but it also makes it easy for you to create products since it will include all your favorite settings each time. Just change the photo, edit the text and price and you're set to go (barring any other things you need to add or remove such as Optionals).
You'll need to insert this link initially in each of your products manually unfortunately, but that's more than half the battle then as the copy/paste method then takes care of the rest. Just be sure to check for things you need to add separately or remove from the new product that might have been in the copied one. I tend to copy like products so that they are similar already
