Theresa is a pastor in San Francisco and blogs at TheresaECho.com.  I have heard her described as the "queen of prayer stations."  

I love these "flaming" rainsticks for Pentecost.  They take the prayers of the gathered and turn them into the flames of the spirit and recreate the sound of many languages spoken at once.  

Read more here: http://theresaecho.com/2014/04/06/rainsticks-pentecost-lent/