THEME:   last word of phrase can modify DRAGON   
GOOD ONES:     Nice pen   PLUME ["La plume de ma tante…"]   
Spam holders  CANS [not computer debris]   
It's often bought at an island   GAS [islands at a gas station]      
BTW:   IMAGINE DRAGONS is the key theme clue and would be good if I had heard of that group.      
Church attendees   LAY PEOPLE [I'd have added "mostly" since clerics also attend]      
Place that gave its name to a cat breed   SIAM [the way I see it the cat took the name from the place]      
Org and
 No appear in my newspaper as part of clues but they lack periods --- is this a new fad, and if so, I say it's not 
ok --- and that's my 
ans      Some unique entries like EMAIL HOAX; WHALING ON; I AM LEGEND; LAY PEOPLE --- in addition to the theme entries.      
RATING:    
 
  
 
Three grins = Loved it; Two grins = Enjoyed it; One grin = A bit bland for my taste; One teardrop = Not much fun