I'd like a detailed list of all the flower shops and (singing?)
telegram services in or near Columbia City, Indiana.

I found several florists in Columbia City by going to
www.switchboard.com and www.anywho.com and doing a yellow page search
for florists in Columbia City, IN
I then did a search for each shop on Google to see if they had a
website (only 1 did).

Carriage House Flowers & Gifts
529 N Line St
Columbia City, IN 46725-1229
Phone:(260)244-6854
 
Our Compliments Gift & Floral Shop 
300 N Oak St
Columbia City, IN 46725-1608
Phone:(260)244-6120

Stones Throw Away     
310 S Main St
Columbia City, IN 46725
Phone:(260)244-5852 

T-N-T Floral & Gift Shoppe 
http://www.tntfloralshoppe.com/  
Old Trail Rd W
Columbia City, IN 46725
Phone:(260)244-5531 

There are also dozens of on-line florist that deliver anywhere. 
I have listed 2 below, if you are interested in more of these let me
know and I'll post them.

1-800 flowers
http://www.1800flowers.com

FTD
http://www.ftd.com

The closest singing telegram/Entertainment Company to Columbia City is
in Fort Wayne, which is less than 20 miles away according to
switchboard.com.

Sweet Cakes Comedy Entertainment Company    
18.13 mi 
PO Box 11433
Fort Wayne, IN 46858-1433
Phone:(260)745-1545