The ladies at church usually coordinate meals for illness or a new baby through email. This works pretty good IF the group is small and everyone remembers to Reply All.
There are several free sign-up sites to help you be more organized when coordinating a group.
Some are just for food (baby, illness, death, potluck, sports snacks, etc.), but a few will work for any kind of event.
How would you use these sites?
See all of the {Days} HERE