Meals, handled.
Set up a page where friends send a gift card or sign up to bring a meal. Nobody pays through the site, and your friends never need an account.
Gift cards first.
List the family's favorite places. Friends buy on each place's own site and send the card straight to the family.
A day each.
Friends who love to cook pick a day, choose breakfast, lunch or dinner and a drop-off time, and say what they're bringing so meals don't repeat.
No donation box.
Add DoorDash or Venmo if it helps. The address stays private until someone signs up for a day.