Sandbags? Sand-filled socks?

After using the sand, dump the sand where it helps to smooth, repair, or build the HG slope.
sandbags and sand-filled socks or tubes

If enough mass, then use several to anchor a parked hang glider. Be sure mass is more than enough for the job.

Make a pillow; shape as desired.

Anchor small toy kites, wind tells.

Anchor corners of ground blankets.

Anchor lower part of temporary privacy curtain.

Toss games.

Form steps in the slope.

Wet with seawater and have an evaporative cooling item.

Ballast for flight. Tie sand-filled socks to belt or harness

Flight-target markers.

Flight-distance markers.

Field-limit indicators.

Anchor a long wind-direction-indicating ribbon

Load tripod for camera stability.

Anchor for inflated Lazy Couch

Place on top of wing bag, rib bag, tip cover bags, etc.

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