Attach this to your bottle to aerate while pouring wine! We find these work just as well as the much more expensive stand up units.
Do aerators work? Absolutely, but it is important to manage expectations. They are not going to turn a $10 bottle of wine into a Grand Cru Bordeaux. Aerators are great for opening up wines and allowing them to breathe. Wines that are opened up tend to their best selves. They will have more complex flavours and will not taste 'narrow'. The difference is there, but it is subtle. Also best used on red wines.
It is a fun party game to compare a non aerated wine to an aerated one.