I've just been to netto and bought a 52L Chrome Sensor Bin which comes with 4 AA batteries.
You put your hand near to it and the bin lid opens and then a few seconds later the lid closes.
This is the first time i've seen a bin like this but i think they've been out for a while.
It only cost £29.99 from Netto.
Sorry this is my first post and i couldn't get a picture up