WW1 Tank (Army) Pieces for Diplomacy the Board Game
Small tank pieces that should go well with your diplomacy board game. I found some tank models on here but nothing simple enough to print without rafts or supports that still looks like a tank.
This goes with the matching ship to use as fleets:
http://www.thingiverse.com/thing:714358
These will print fine without rafts or supports.
Enjoy!