Did dinosaurs with grasping hands have possessions?

They constructed nests for their eggs.

I suspect that they made and used very simple tools. But there wasn’t much pressure on them to make tools as they could get most things done with simple brute force.

Perhaps they selected specific and unique stones for their stomach stones (gastroliths).

One episode of Family Guy showed how frustrated dinosaurs must have been and therefore probably too frustrated to have possessions.

I hear that possession was ten tenths of the law of the Mesozoic jungles, so yes.

Yes. They all had luggage bags for when they went on holiday.