Can you scoop Woma fuel pod? Dead thargoid robot? It would be nice also to take dead ships like hognoses do
I don't know about Woma fuel pods, but you can certainly scoop thargons. They turn into 1 tonne alien items. Sometimes though the bounty for shooting them (50cr) is more than you'll get for selling them once scooped.
I believe aegidian is thinking about a method for capturing abandoned ships (search the bb for "remora").
It is generally inadvisable to eject over the target you just bombed.
I've seen normal system prices for Alien Items as high as 65.x credits. I believe the higher tech systems tend to pay more for them, though I can't prove it. I tend to scoop those items (not quite proficient enough to go Thargoid hunting yet) and save them up until I run into a Behemoth. Of course, flying a Python with plenty of cargo space helps.