Bring list

For potluck-style events, the host can list what's needed (a main dish, ice, folding chairs, whatever the gathering requires) and guests claim the items they'll bring.

Avoiding duplicates

Once an item is claimed, everyone else sees that it's covered, so you don't end up with five guests all bringing the same salad.

Guests can add items too

Guests aren't limited to claiming what the host listed. They can add their own item to the list and claim it themselves, useful when someone wants to bring something specific.