FaceBook competitions

OK so im a web master for a wee search engine company, We have a facebook page see ere;
https://www.facebook.com/searchlotto
most of our users are retired, bored and hate life.
We are looking to do some more FaceBook competitions
since my time in reign ive done "Guess the" which done alright, Max reach was 1500
now we're onto "Tag yourself" competitions on lottery tickets, Although the oldies get bored faster than a hormonal teenager and after a few decide they arent winning and give up.
So we're looking for some more fun competitions to do, Can you recommend any ?
We're happy to buy lottery tickets etc, or give them free entries for winners
+Rep for help
Ross

These types of competitions are extremely annoying and one of many reasons why I rarely use Facebook.

no thanks