Compost. It's a Inner West Council thing borrowed from other councils like Lismore. I don't know if Inner West runs it's own compost business like Lismore used to/does (I think) or contracts it out. All the flats have little compost bins and there's a couple bin areas with a single big compost bin we're meant to empty our compost into. We use it a lot but I don't think many of our neighbours do. Sometimes I open the rubbish bins and there's recycling in them and vice versa. What am I going to do, act like Kathleen Turner in Serial Mom?
I took the rusty aliens out of a box sitting next to the compost for the photo, they weren't in the compost bin.