OOC: I wanted to post this earlier, hope you don't mind.
A few hours before:
Isaias walks away a little, at a slow peace, his gaze on the ground. He seems to be looking for something among the rubble. He crouches and picks pieces of stuff. Some he tosses away again, others he keeps.
Taking 20 (27) to find scrap materials for crafting.
The second watch:
Isaias wakes up to cover his shift. If it's quiet enough, he'll tinker a bit with the things he found.
Depending on what he found he might craft something