Photos from the people who were there
People who were there can add their photos to one memory, without an Ember account and without joining the mantel.

First date
Photos they added.
Photos they added, with their name on this day.
How it works
Open a memory and tap From Others. Send the link, or put a card by the door.
They open it and add photos. You choose whether they can see what other people added, or only their own.
Uploads stay open for at most a day, and you can pause them or close them early. What they add sits on that memory with their name on it, and anyone who can edit the day can take a photo off.
A link or a short code
The link opens that memory. If a printed card is easier than a link, the short code does the same job. You can change the link, and you can lock a phone that shouldn't add any more.
On one memory only
They can give a nickname. Ember remembers that phone while uploads are open, so the same person can come back.
After they add something, Ember may offer a way to start a mantel of their own, separate from yours.
When the window ends
When uploads close, the photos stay on the memory. For 7 days they can still open the link to look at what they added and download it.
What it doesn't do
There is no public gallery, and nobody finds your mantel from outside.
What they add is only on that one memory.