My go to move is scraping the remaining bits of meat off with a spoon.  If you trim the belly meat off your fillets, throw that in too.  Mix that with an egg and a handful of breadcrumbs and you have a tasty salmon burger waiting to happen.  I typically stick with SPG, but occasionally mix in a sweet/salty/spicy BBQ rub or some cajun/blackened seasoning.  Throw it on the grill or cook it in a cast iron pan.  Serve on a toasty ciabatta roll with a smear of good tartar sauce, lettuce, and fresh tomato.
A little bit more effort than just seasoning and cooking up the spine, but well worth it IMO.