Eat At Dixie Belles website shares how to grow luffas, how to process them, save their seeds to either grow again next season or gift others.
You can actually eat luffas when they are young and tender but when their reach maturity they become a great natural beauty product  to exfoliate your skin.

Click here to read article:

http://eatatdixiebelles.blogspot.com.au/2012/02/growing-processing-loofahs.html

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Thompson & Morgan 6925 Luffa ‘cylindrica’ (Bathroom Sponge) Seed Packet

Loofah Back Brush with Large 8″ Loofah

2 Natural Organic Giant Whole Loofah Luffa 20 Inches includes one free 8 oz bar of olive oil soap

Bath & Body Natural 10″ Maya Loofah Scrubbing Sponge