This is an amazing job made by Paul Weber: over 450 printable cards in free PDF. Equipment, Treasure and Condition: with gear, items, vehicles, food, mounted equipment, weapons, armor, gems, art objects, coins and conditions.
Download Equipment Cards : http://bit.ly/DnDEquipCards
Download Treasure Cards: http://bit.ly/TreasureCardsDnD
Download Condition Cards: http://bit.ly/ConditionCards
The PDF also contains instructions on how to print and build the cards and suggestions on how to use them.