A final idea this week to pray for friends and neighbors near and far involves setting up Prayer Vigils for specific needs. This can be done prior to an event-a convention or a meeting, perhaps. Vigils are also appropriate for someone who is having major surgery or who is very ill. Special seasons of the year inspire the idea of vigils - like Good Friday.
Once the reason is identified, post a sign up sheet and invite people to join the prayers. People can come to a central place to pray or pray at their own home, depending on convenience.
A way to make this even more visual is for each person to sign up on a brick (or a paper looking like a brick) that is used to build a wall! You could also make a vine and have each person sign up on a flower or leaf to cover the vine in foliage.
(You could also use the vine for prayer requests...)