"
We had a small break-in; the perp left a bunch
of these, either
intentionally or not, scattered around the
scene of the crime.

Does anyone know what this thing is or does? I
thought it might be to
slow water-flow within a hose, but I'm not
sure.


Yup, that's a bio ball for pond filtration.



so the robber works for a lndscaping company.
*That* narrows it down.