I happened to have bacon, leftover (already cooked) salmon, and avocado (because once again I succumbed to 3/$5.00). I did not have Ciabatta bread and I forgot the arugula part, but it was still a reviewable success.
Cooked the bacon and then heated the salmon in the renderings (thanks Dana:) Made the guacamole with a little salsa added in for the kick. I just toasted my thin sandwich bread and in the excitement, forgot about the arugula. I only had iceberg anyway, as I'm shying away from the fancy lettuces until they assure me they know how to properly clean them.
Credits: Foodnetwork.com Ina Garten salmon and guacamole sandwiches