Thanksgiving Day in Canada or the United States is a popular holiday but we are not the only countries to give thanks for good harvests in the fall. Germany has a Erntedankfest (“harvest thanksgiving festival”), often celebrated on the first Sunday in October. It is rural and religious in nature rather than a family get-together and features special all day church services as well as a festive air with parades, processions, feasting, and music.
One of the most outstanding features of the holiday is the decorations done with vegetables, fruits, grains and breads which are later donated to the needy. Although on a large scale, these displays can be an inspiration for Thanksgiving table decorations in North America. Here are a few examples gleaned from Wikipedia and Wikimedia Commons but there are many more. Just Google Erntedankfest and you will have a multitude to dazzle your eyes.
A straw wreath, fresh basal, cyclamen and mums add to the display of vegetables and grain. 
Here, a very elaborate display forms a carpet like decoration. 
Fruits and vegetable sit at the base of a formal altar with a traditional “harvest crown” on the right. 
