Luffa Seeds
Luffa aegyptiata
Grows as a vine like cucumbers or melons, can also be trained on a trellis. The young luffas can be eaten as a vegetable. When they are left to mature and dried they produce the luffa sponge used for bathing or to scrub vegetables.
 
Check out this great article from our friends at Mother Earth News about growing and harvesting your own Luffa or "Loofah," Grow Your Own Luffa Sponges, by Hannah Kinkaid.