Always carry ship cores on you. I usually carry around 10-30 on the multiplayer servers I am on.
Also the "craft" tabs in your inventory make great pockets, I use them to store my guns, helmet, and said ship cores.
If your playing on a "lose items at death" server, they are nifty causeyou keep all your items you place in those 6 slots. And guns are expensive, same with blueprints though.
I like how these 'pockets' work currently, it is unique, and I can store stuff that I usually don't need on me but seperated by a tab so it is not in my face all the time.
Its a good mechanic