@DrBeaker
A variation of Scrabble...You start with a word or term used somewhere on your Website...Posters then must post a word that is associated with the first word...and also found on your website. The next poster must post a word found on your website that is associated with the second word.(This will get folks familiar with terms and words used in your special processing methods

..and also introduce them to your products)
Example:
Starting Word ....
tobacco
Next Poster........Absolute
Next Poster......... 5ml
Choose how many posts per day will be allowed per member during the contest/giveaway
Post the time/date when a winner (or 2 or 3,etc) will be randomly selected.
Folks like to try your products, so a free sample to a randomly selected winner(s) would be good.
The labor Day Weekend is upon us...ECF members are scouring the forum for deals and giveaways..
This would be a good time to implement the contest/giveaway for maximum exposure...
Then again, some folks might be too busy with family/gatherings to participate
So...the week(s) leading up to a Holiday(s)... Thanksgiving...and Christmas..New Years is good too.
Any time is good really...and you can continue with more winners for as long as you like
More ideas as I think of them
