TheGameCrafter offers hexes and square cards

TGC Hex card template

TheGameCrafter.com is now offering hex cards and square cards. The hexes are 3.5" the short way, 3.75" diagonal, and the squares are 3.5" on a side.  They're printed 12 to a page (regular poker cards are 18 to a page), and a page of printed cardstock in whatever form you choose is $2.29 at TGC, so if you make your deck divisible by 12, that's 19 cents a card - pretty great.

This is a really cool new feature - I love it when they add new printed options.  This one is especially good because it allows for map-building games (although the tiles are the standard thick glossy cardstock, so not too thick).  I don't think either of these will fit too well in the new tuckbox or printed small box options TGC offers, but they'd go in the big all-purpose 10"x10" boxes they use.

Here are links to the particular description pages with templates for designers:
Hexes here
Squares here