I have seen many onion cutters but the above one is simply wow. This onion cutter chops, dices, slices and cuts onions without letting you cry. This onion chopper cuts the onions on a switch of a button and the best part is that it comes with satinless steel blades to cut onions as per your requirements. The onions are then collected in a plastic container attached to the plastic board that holds the onion.
The onion chopper is dishwasher safe, it costs $15 and it is available in the online store of Sur La Table.