Easyklip
A good emergency lightweight tarp clip that will not let go: http://www.easyklip.com/ Mini = 12 grams. Of course, this remains the lightest tarp clip: http://www.theultralighthiker.com/worlds-lightest-tarp-clip/
lightest tarp clip
World’s Lightest Tarp Clip:
You can buy these approx 1” polystyrene balls from Spotlight for @ $2.40 for 20. They weigh about .2 gram each. You can carry a few of these in your repair/fishing kit (along with some string, eg 1-2mm Dyneema) for use at need, eg when you need some additional tie-downs for your tent/tarp or