In its simplest form it will be an archive of all the ideas and activities that have been presented through this site. There is a short list you can have a look at here . I am sure that this is far from finished.
This is all the 'to do' type things that people have tried.
When people come together we need to 'do' something - even if it is just sitting quietly.
What do you do? By yourself, with your family, in a group?
Perhaps this is the place for a 'contacts' database. Certainly this will form a significant part of the site somewhere. A big part of the site's existence is trying to provide ways of people getting in-touch - better still, together; there is no real substitute for direct, human contact.

Some resources might involve equipment.
A database of 'stuff' that can be shared. This would be most effective within the same country but need not be limited to that.

What else can you think of here ...?