10 rarely used board game mechanisms that might be worth considering:

http://kevingnunn.com/2013/12/25/the-10-best-game-mechanisms-you-arent-using/

http://kevingnunn.com/2013/12/28/the-10-best-game-mechanisms-you-arent-using-part-2/

http://kevingnunn.com/2014/01/01/the-10-best-game-mechanisms-you-arent-using-part-3/

http://kevingnunn.com/2014/01/04/the-10-best-game-mechanisms-you-arent-using-part-4/

http://kevingnunn.com/2014/01/07/the-10-best-mechanisms-you-arent-using-part-5/

http://kevingnunn.com/2014/01/10/the-10-best-mechanisms-you-arent-using-part-6/