You could do just bog standard shoulders for your tacticals and such, but go with 3rd party shoulders and such if you are going full Salamanders or Salamanders successors. Bits of War has some AWESOME 'dragonborn' shoulders. I had bought a set and put them on a squad of assault marines and they look pretty nice. (I will post a picture of them later, only just primed the squad black but I can still show off the shoulders)
They also have some nice looking razorback turrets too, since GW doesnt want to do just sell turrets to us.
Wargame Exclusive also has some amazing looking turrets for razorbacks as well. And they also have a lot of different head choices and other bits to customize your army. They also have a pretty great looking chaplain model too thats pretty impressive.
Spellcrow has other bits, like helmets and such that can help personalize your troops even more
I actually got some salamandra icons recently and put them on my second forgeworld contemptor.
(I just finished magnetizing the cyclone launcher last night and had to make adjustments to the left shoulder Icon so I will upload an updated picture later but here is what it looked like before the cyclone launcher)
I think I will be ordering a lot more spellcrow stuff for my chapter.
Of course Forgeworld has some salamanders stuff, but nowhere near as much as other chapters (like space wolves) the shoulders are crazy expensive (roughly $16 for just 10 shoulder pads, not including taxes and shipping)
Armies: The Dragoons Chapter (Astartes and Primaris), Sisters of the Silver Chalice (Sororitas), Grey Knights, Deathwatch, Elysian Drop Troops, Farsight Enclave (T'au).
Blade with whom I lived by, Blade with whom I now die.
Serve right and justice one last time, seek one last heart of evil.
Still one last life of pain, cut well old friend, then farewell.