Picnic Blanket anchor:

The model is a simple clip with a peg to anchor a blanket for your picnics. Simply open the clip and pinch the blanket wherever you want. It is made of two pieces: the main clip with the peg and a latch to better hold on the cloth that simply slide in the grooves of the main component.

To not loose the second part, it has also a small hole to insert a rope. 

I didn't have too much time to test it on the field, so any suggestion is welcome!

Print it, test it, fix it, share it!