I've spent the past few weeks updating my 2/14 collection over at tradingcarddb. It has been actually pretty effective in finding dupes in the collection and pruning them. I'm not sure if this link will take you to my collection, which is almost exclusively 2/14 stuff at this point, but if it works, good!
It has also been pretty effective in finding obscure cards for players to hunt for on ebay or COMC. There's some of the former in this post, as well as some less obscure additions from COMC.
Gran Prix drivers. Ferris wheels. Grizzly Adams. Black Panthers. That's a pretty diverse group of 2/14 addition.
And there you have it!