What to do with hybrid battery cells?

I received boxes of Prius parts, and one had battery cells for a hybrid battery (not sure which gen, possibly 3?). They look like they're in good condition, no danger pillows.

I called Toyota to see what to do with them, and they told me to call dealerships in my area and figure out myself.

The dealerships said they don't take them either and to call scrap yards.

The scrap yards said no, but one did seriously suggest digging a hole and just throwing it in there lol

So, uh... what's the actual thing I should do though? ¯⁠\⁠_(ಥ⩊ಥ)_⁠/⁠¯